{"product_id":"c1-rock-tumbler-kit-professional-large-2-5lb-capacity-up-to-5x-more-noise-cancelling-adjustable-timer-speed-with-full-accessories-memory-function","title":"C1 Rock Tumbler Kit - Large 2.5LB Rotary Rock Tumbler for Adults \u0026 Hobbyists, Quiet Rubber Barrel, Adjustable Timer \u0026 Speed, Complete Gem Polishing Kit with Memory Function","description":"\u003cstyle\u003e.aplus-img{display:block!important;margin:0!important;padding:0!important;border:0!important;max-width:100%!important;height:auto!important;line-height:0!important;font-size:0!important;vertical-align:top!important}.aplus-img+.aplus-img{margin-top:0!important;margin-bottom:0!important}.aplus-wrap{line-height:0!important;font-size:0!important;margin:0!important;padding:0!important;display:block!important}\u003c\/style\u003e\u003cdiv id=\"v-about-wrap\"\u003e\u003c\/div\u003e\u003c!-- DBG1_A_descLen=0 --\u003e\u003c!-- DBG2_B_descLen=131 --\u003e\u003cscript id=\"v-gallery-js\"\u003e(function(){var 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class=\\\"about-this-item\\\"\u003e\u003cli\u003eTurn Ordinary Rocks Into Beautiful Polished Gemstones At Home – C1 Rock Tumbler turn rough rocks into polished gems, then you will be very excited to see the stones change with each cycle. That's a fun process of rock tumbling and a family little project for parent-child endeavor.\u003c\/li\u003e\u003cli\u003eLarge 2.5LB Capacity With Up To 75% Noise Reduction – The updated KoolStone Rock Tumbler features a large 2.5LB barrel, perfect for polishing multiple stones in one batch. Holds more rocks than most beginner tumblers. The rubber barrel is 75% quieter than typical plastic barrels, making it ideal for home or classroom use.\u003c\/li\u003e\u003cli\u003eFaster Polishing Time \u0026 Better Polishing Results – 3-speed controls (providing more granular tumbling results), a 9-day timer (with automatic shutoff feature and memory function), all displayed on clear screen, letting you easily hone your settings for precise tumbling each time.\u003c\/li\u003e\u003cli\u003eEverything You Need For Tumbling Is Here – C1 Rock Tumbler has everything you need to create polished gemstones. Rock tumbler, 2.5LB capacity rubber barrel, 1LB for 9 different types of rough gemstones, 3 belts and 4 polishing grits and ceramic contact media, sifter, jewelry fastenings, and illustrated tutorial guide. For longer use and better results, pair it with KoolStone’s 4LB Professional Polishing Grit (sold separately).\u003c\/li\u003e\u003cli\u003eKoolStone C1 Series – Trusted by Beginners, Backed by Experts. Start your rock tumbling journey with KoolStone, the brand trusted by thousands of families and hobbyists. The C1 Rock Tumbler is a classic model that balances reliable performance with all-in-one convenience. From the classic C1 to the Pro, Pro Max, and Pro Ultra, KoolStone continues to evolve with exclusive designs and upgraded performance for every rock enthusiast — ready to start your rock tumbling journey.\u003c\/li\u003e\u003cli\u003eOfficial KoolStone Warranty – 𝟏 𝐘𝐞𝐚𝐫 𝐂𝐨𝐯𝐞𝐫𝐚𝐠𝐞 \u0026 𝟗𝟎-𝐃𝐚𝐲 𝐑𝐢𝐬𝐤-𝐅𝐫𝐞𝐞 𝐓𝐫𝐢𝐚𝐥. Your purchase is protected by KoolStone’s official 𝟏-𝐲𝐞𝐚𝐫 𝐰𝐚𝐫𝐫𝐚𝐧𝐭𝐲 and a 𝟗𝟎-𝐝𝐚𝐲 𝐦𝐨𝐧𝐞𝐲-𝐛𝐚𝐜𝐤 𝐠𝐮𝐚𝐫𝐚𝐧𝐭𝐞𝐞. Shop with confidence — we’re here to support your tumbling journey.\u003c\/li\u003e\u003cli\u003eEasy Maintenance – The durable drive belt is designed to be replaceable, making maintenance simple and extending the life of your rock tumbler.\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eImportant information\u003c\/h4\u003e\u003ch5\u003eSafety Information\u003c\/h5\u003e\u003cp\u003ePlease always keep your hair away! Should you experience any product issues—such as a broken belt, machine malfunction, missing parts, or other concerns—our dedicated after-sales team is here to help. Simply email us at support@ikoolstone.com, and we’ll respond promptly, often resolving issues the same day. Your satisfaction is our priority, and we’re committed to providing efficient, reliable solutions to ensure a seamless experience.\u003c\/p\u003e\u003ch4\u003eProduct Description\u003c\/h4\u003e\u003ch5\u003eProduct description\u003c\/h5\u003e\u003ch5\u003eIt\u0026#039;s never too late to start a hobby!\u003c\/h5\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/1d4e46b8-8ca9-4d69-a8f2-9ad4a7da0ed6.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" class=\\\"aplus-img\\\" style=\\\"max-width:100%;height:auto;display:block;margin:0!important;padding:0!important;border:0;vertical-align:top;line-height:0;font-size:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003ch5\u003eA New Way to Polish\u003c\/h5\u003e\u003cp\u003eTransform ordinary rocks into dazzling gemstones — right at home.\u003c\/p\u003e\u003cp\u003eKoolStone Rock Tumbler makes it easy and exciting to turn rough stones into smooth, polished treasures. Whether you’re a curious beginner or a passionate collector, everything you need is included.\u003c\/p\u003e\u003cp\u003eThis isn’t just a tumbler — it’s a journey through geology, patience, and reward. Just add rocks, grit, and water, then let the process unfold over a few weeks. The result? Stunning stones you’ll be proud to display, trade, or turn into custom jewelry.\u003c\/p\u003e\u003cdiv style=\\\"display:flex;flex-wrap:wrap;gap:0;margin:0;padding:0;line-height:0;font-size:0;\\\"\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/9ad9d673-fe2f-4c12-ae72-6c33726702dc.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/6d5544c2-d9ed-401f-9879-08b91d29c8fe.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/9ca79523-62ae-484a-b08d-ddcb77d3757b.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/ab9f71c1-c238-4348-a26c-4c51ed4b48f7.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003c\/div\u003e\u003ch5\u003eWelcome to Your Creative Journey with KoolStone!\u003c\/h5\u003e\u003cp\u003eWe’re amazed by the beautiful creations you craft with your rock tumbler! Share your stunning results with us, and we’ll showcase your work across our Amazon page and social media—your creativity deserves to shine.\u003c\/p\u003e\u003cp\u003ePro Tip: For that perfect shine, pair your tumbler with our high-quality polishing grits kit (don’t forget to add it to your cart!). Combined with soap water, mineral oil, and patience, they’ll transform rough rocks into dazzling jewels for jewelry, crafts, or your collection.\u003c\/p\u003e\u003cp\u003eHave concerns?  We’re here to help—quickly and cheerfully. Just reach out, and our team will ensure a seamless experience. Your satisfaction is our priority!\u003c\/p\u003e\u003cp\u003eKeep creating, keep inspiring, and let’s bring your vision to life—together.\u003c\/p\u003e\u003cp\u003eKoolStone– Where Imagination Meets Craftsmanship.\u003c\/p\u003e\u003cp\u003e↓Add KoolStone 4 LBS Polishing Grit Kit for long-term polishing needs—better value per use!\u003c\/p\u003e\u003cp\u003eFAQs About KoolStone Rock Tumblers\u003c\/p\u003e\u003cp\u003e1. Can you put regular rocks in a rock tumbler? And Can the rock tumbler be used for sea glass?\u003c\/p\u003e\u003cp\u003eYou will want to avoid soft rocks as they might just fall apart when you add them to a rock tumbler and some really hard rocks might damage your  tumbler. And the rock tumbler can be used to polish sea glass effectively!\u003c\/p\u003e\u003cp\u003e2. How long does it take to polish rocks in a rock tumbler?\u003c\/p\u003e\u003cp\u003eFor beginners, the answer can come as a bit of a shock as it could be one week or one month to tumble rocks to a polish that you are happy with. Patience is a virtue in this hobby. The end result can be worth the wait as they look great when they are finished.\u003c\/p\u003e\u003cp\u003e3. If my belts broken, how can I do?\u003c\/p\u003e\u003cp\u003eBelts might break after a long time use. No worries, please feel free to reach out us to get the replacement.\u003c\/p\u003e\u003cp\u003e4.What other items can you tumble?\u003c\/p\u003e\u003cp\u003eIf you’ve found some coins then you can throw those in the rock tumbler. A rock tumbler will help clean it giving it a nice shine.\u003c\/p\u003e\u003cp\u003eOther than coins you can also place shells inside a rock tumbler.\u003c\/p\u003e\u003cp\u003e1. Mind the Noise: Tumbling machines can be quite noisy. We recommended that you keep it in the garage so that you don\u0026#039;t disturb your neighbors.\u003c\/p\u003e\u003cp\u003e2. Don\u0026#039;t wash grits down the drain! It will create a clog that is impervious to drain cleaner. Rinse the grits steps outside using a garden hose.\u003c\/p\u003e\u003cp\u003e3. Use mineral oil for extra shine! If you want your finished stones to be really shiny, coat and polish the stones with mineral oil.\u003c\/p\u003e\u003cp\u003e4. Notice: If any part is missing, please take a moment to reach out to us for a replacement or compensation. Thank you for your patience and understanding!\u003c\/p\u003e\u003ch4\u003eFrom the Manufacturer\u003c\/h4\u003e\u003ch5\u003eProduct description\u003c\/h5\u003e\u003ch5\u003eThe World\u0026#039;s First Brushless Rock Tumbler\u003c\/h5\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/54741815-d7c9-4156-b9f1-617a4e5b9d98.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" class=\\\"aplus-img\\\" style=\\\"max-width:100%;height:auto;display:block;margin:0!important;padding:0!important;border:0;vertical-align:top;line-height:0;font-size:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003ch5\u003eProfessional Power. Home-friendly Polish.\u003c\/h5\u003e\u003cp\u003eBrushless Rock Tumbler for serious shine.\u003c\/p\u003e\u003cp\u003ePowered by a next-gen brushless motor, this tumbler delivers smoother operation, longer lifespan, and quieter polishing — all in a sleek, durable design. Whether you’re a hobbyist or a seasoned stone collector, this is your next upgrade.\u003c\/p\u003e\u003cp\u003eWhether it’s your first tumbler or your fifth, the brushless model is a game-changing investment in your rock tumbling journey.\u003c\/p\u003e\u003cdiv style=\\\"display:flex;flex-wrap:wrap;gap:0;margin:0;padding:0;line-height:0;font-size:0;\\\"\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/5c0602ea-4720-45af-97df-fd0529961916.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/ed4349e0-62cd-413d-8116-b0e61c25891a.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/9d15986f-6291-4a9f-b8eb-4ce256a65a86.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/b891288f-acbc-4235-aa6a-27dca12a4b0a.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003c\/div\u003e\u003ch5\u003eWelcome to the Next Level of Rock Tumbling with KoolStone C1 Pro\u003c\/h5\u003e\u003cp\u003eYou didn’t just choose a tumbler — you chose performance.\u003c\/p\u003e\u003cp\u003eWe can’t wait to see the brilliant finishes you create with your C1 Pro. Share your polished masterpieces with us, and your work may be featured on our Amazon page and social media. Your craftsmanship deserves the spotlight.\u003c\/p\u003e\u003cp\u003ePro Tip: For that perfect shine, pair your tumbler with our high-quality polishing grits kit (don’t forget to add it to your cart!). Combined with soap water, mineral oil, and patience, they’ll transform rough rocks into dazzling jewels for jewelry, crafts, or your collection.\u003c\/p\u003e\u003cp\u003eHave concerns? We’re here to help—quickly and cheerfully. Just reach out, and our team will ensure a seamless experience. Your satisfaction is our priority!\u003c\/p\u003e\u003cp\u003eKeep creating, keep inspiring, and let’s bring your vision to life—together.\u003c\/p\u003e\u003cp\u003eKoolStone– Where Imagination Meets Craftsmanship.\u003c\/p\u003e\u003cp\u003e↓Add KoolStone 4 LBS Polishing Grit Kit for long-term polishing needs—better value per use!\u003c\/p\u003e\u003cp\u003eFAQs About KoolStone Rock Tumblers\u003c\/p\u003e\u003cp\u003e1. Can you put regular rocks in a rock tumbler? And Can the rock tumbler be used for sea glass?\u003c\/p\u003e\u003cp\u003eYou will want to avoid soft rocks as they might just fall apart when you add them to a rock tumbler and some really hard rocks might damage your tumbler. And the rock tumbler can be used to polish sea glass effectively!\u003c\/p\u003e\u003cp\u003e2. How long does it take to polish rocks in a rock tumbler?\u003c\/p\u003e\u003cp\u003eFor beginners, the answer can come as a bit of a shock as it could be one week or one month to tumble rocks to a polish that you are happy with. Patience is a virtue in this hobby. The end result can be worth the wait as they look great when they are finished.\u003c\/p\u003e\u003cp\u003e3. If my belts broken, how can I do?\u003c\/p\u003e\u003cp\u003eBelts might break after a long time use. No worries, please feel free to reach out us to get the replacement.\u003c\/p\u003e\u003cp\u003e4.What other items can you tumble?\u003c\/p\u003e\u003cp\u003eIf you’ve found some coins then you can throw those in the rock tumbler. A rock tumbler will help clean it giving it a nice shine.\u003c\/p\u003e\u003cp\u003eOther than coins you can also place shells inside a rock tumbler.\u003c\/p\u003e\u003cp\u003e1. Mind the Noise: Tumbling machines can be quite noisy. We recommended that you keep it in the garage so that you don\u0026#039;t disturb your neighbors.\u003c\/p\u003e\u003cp\u003e2. Don\u0026#039;t wash grits down the drain! It will create a clog that is impervious to drain cleaner. Rinse the grits steps outside using a garden hose.\u003c\/p\u003e\u003cp\u003e3. Use mineral oil for extra shine! If you want your finished stones to be really shiny, coat and polish the stones with mineral oil.\u003c\/p\u003e\u003cp\u003e4. Notice: If any part is missing, please take a moment to reach out to us for a replacement or compensation. Thank you for your patience and understanding!\u003c\/p\u003e\u003ch4\u003eFrom the Brand\u003c\/h4\u003e\u003cdiv style=\\\"display:flex;flex-wrap:wrap;gap:0;margin:0;padding:0;line-height:0;font-size:0;\\\"\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/12adcd9c-2afa-42a3-837c-832f7501b2d5.__CR0,0,1464,625_PT0_SX1464_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/84404f9c-196c-4b8a-837e-486f1d1de2a0.__CR0,0,362,453_PT0_SX362_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/b8940820-deb9-4d6e-a46d-a1ec6ea35099.__CR0,0,332,364_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/f0d9ad44-7bd9-4995-adfe-c2f8aedf7b62.__CR0,0,332,364_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/805e1387-11f9-4e45-97bc-e61ed916ae9d.__CR0,0,332,364_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/6c6d9688-d24f-40cf-b909-39ebc742b65d.__CR0,0,332,364_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003c\/div\u003e\u003ch5\u003eNew Arrivals #1 Pick\u003c\/h5\u003e\u003cdiv style=\\\"display:flex;flex-wrap:wrap;gap:0;margin:0;padding:0;line-height:0;font-size:0;\\\"\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/b5be2585-b063-4e5f-ad6d-2340a21f09f6.__CR0,0,498,546_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/083169fe-192b-48c3-aa66-445f4d5fc17b.__CR0,0,498,546_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/e69f2248-ddd8-4bba-918b-d3b3e205f88b.__CR0,0,498,546_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/5c1587c5-6b9c-4525-8371-67dcd3a92677.__CR0,0,498,546_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003c\/div\u003e\u003ch5\u003eRock Tumber Kit Series\u003c\/h5\u003e\u003cdiv style=\\\"display:flex;flex-wrap:wrap;gap:0;margin:0;padding:0;line-height:0;font-size:0;\\\"\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/70b19f27-e858-41cf-9c67-064f3fb57857.__CR0,0,498,546_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/c044e72c-0e0e-4bb4-b13b-8dc18ee62a3f.__CR0,0,498,546_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/fed2a699-ae93-4994-87ab-023175a4f002.__CR0,0,498,546_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/bbee923d-9aac-4e96-8282-8bb07c87d7de.__CR0,0,498,546_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003c\/div\u003e\u003ch5\u003eRock Tumber Grit Kit Series\u003c\/h5\u003e\u003cdiv style=\\\"display:flex;flex-wrap:wrap;gap:0;margin:0;padding:0;line-height:0;font-size:0;\\\"\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/35b59187-c837-40b8-9982-9d2d108e9514.__CR0,0,362,453_PT0_SX362_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/c703bddb-c7ef-4b96-b38e-c6dde157cf88.__CR0,0,362,453_PT0_SX362_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003c\/div\u003e\",\"59415834394705\":\"\u003ch4\u003eAbout This Item\u003c\/h4\u003e\u003cul class=\\\"about-this-item\\\"\u003e\u003cli\u003eExclusive Design: The World's First Brushless Rock Tumbler ( Amazon Exclusive ).\u003c\/li\u003e\u003cli\u003eKoolStone C1 Pro Series – Classic Design, Professional Performance. Building on the trusted legacy of the C1, the C1 Pro delivers enhanced power, durability, and precision for serious hobbyists. Its upgraded brushless motor, reinforced barrel system, and intelligent speed control ensure smoother, quieter, and faster polishing results. Designed for creators who seek both reliability and performance — the C1 Pro turns every rock into a masterpiece.\u003c\/li\u003e\u003cli\u003eTHE WORLD'S FIRST BRUSHLESS ROCK TUMBLER -- With a robust brushless motor, this rock tumbler delivers lightning-fast and highly-effective tumbling action that leaves your gems and rocks polished to perfection. Proven to last up to 20,000 hours, with a 60% longer lifespan than regular motors.\u003c\/li\u003e\u003cli\u003e2.5LB LARGE CAPACITY \u0026 75% QUIETER -- An updated features is that C1 Pro Rock Tumbler has a large 2.5LB capacity. Which allows to tumbler more rocks each time. Another improvement is the quieter barrel. Rubber material which has 75% quieter than most plastic barrel.\u003c\/li\u003e\u003cli\u003eFASTER POLISHING TIME \u0026 BETTER POLISHING RESULTS -- 3-speed controls (providing more granular tumbling results), a 9-day timer (with automatic shutoff feature and memory function), all displayed on clear screen, letting you easily hone your settings for precise tumbling each time.\u003c\/li\u003e\u003cli\u003eEVERYTHING YOU NEED FOR TUMBLING IS HERE -- C1 Pro Rock Tumbler has everything you need to create polished gemstones. Rock tumbler, 2.5LB capacity rubber barrel, 1LB for 9 different types of rough gemstones, 2 belts and 4 polishing grits and ceramic contact media, sifter, jewelry fastenings, and illustrated tutorial guide. For longer use and better results, pair it with KoolStone’s 4LB Professional Polishing Grit (sold separately).\u003c\/li\u003e\u003cli\u003eOfficial KoolStone Warranty – 𝟏 𝐘𝐞𝐚𝐫 𝐂𝐨𝐯𝐞𝐫𝐚𝐠𝐞 \u0026 𝟗𝟎-𝐃𝐚𝐲 𝐑𝐢𝐬𝐤-𝐅𝐫𝐞𝐞 𝐓𝐫𝐢𝐚𝐥. Your purchase is protected by KoolStone’s official 𝟏-𝐲𝐞𝐚𝐫 𝐰𝐚𝐫𝐫𝐚𝐧𝐭𝐲 and a 𝟗𝟎-𝐝𝐚𝐲 𝐦𝐨𝐧𝐞𝐲-𝐛𝐚𝐜𝐤 𝐠𝐮𝐚𝐫𝐚𝐧𝐭𝐞𝐞. Shop with confidence — we’re here to support your tumbling journey.\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eImportant information\u003c\/h4\u003e\u003ch5\u003eSafety Information\u003c\/h5\u003e\u003cp\u003ePlease always keep your hair away! Should you experience any product issues—such as a broken belt, machine malfunction, missing parts, or other concerns—our dedicated after-sales team is here to help. Simply email us at support@ikoolstone.com, and we’ll respond promptly, often resolving issues the same day. Your satisfaction is our priority, and we’re committed to providing efficient, reliable solutions to ensure a seamless experience.\u003c\/p\u003e\u003ch5\u003eDirections\u003c\/h5\u003e\u003cp\u003eEverything YOU NEED FOR TUMBLING IS HERE - C1 Pro Rock Tumbler has everything you need to create polished gemstones. Rock tumbler, 2.5LB capacity rubber barrel, 1LB for 9 different types of rough gemstones, 2 belts and 4 polishing grits and ceramic contact media, sifter, jewelry fastenings, and illustrated tutorial guide. For longer use and better results, pair it with KoolStone’s 4LB Professional Polishing Grit (sold separately). FASTER POLISHING TIME \u0026amp; BETTER POLISHING RESULTS - 3-speed controls (providing more granular tumbling results), a 9-day timer (with automatic shutoff feature and memory function), all displayed on clear screen, letting you easily hone your settings for precise tumbling each time.\u003c\/p\u003e\u003ch4\u003eProduct Description\u003c\/h4\u003e\u003ch5\u003eProduct description\u003c\/h5\u003e\u003ch5\u003eThe World\u0026#039;s First Brushless Rock Tumbler\u003c\/h5\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/54741815-d7c9-4156-b9f1-617a4e5b9d98.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" class=\\\"aplus-img\\\" style=\\\"max-width:100%;height:auto;display:block;margin:0!important;padding:0!important;border:0;vertical-align:top;line-height:0;font-size:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003ch5\u003eProfessional Power. Home-friendly Polish.\u003c\/h5\u003e\u003cp\u003eBrushless Rock Tumbler for serious shine.\u003c\/p\u003e\u003cp\u003ePowered by a next-gen brushless motor, this tumbler delivers smoother operation, longer lifespan, and quieter polishing — all in a sleek, durable design. Whether you’re a hobbyist or a seasoned stone collector, this is your next upgrade.\u003c\/p\u003e\u003cp\u003eWhether it’s your first tumbler or your fifth, the brushless model is a game-changing investment in your rock tumbling journey.\u003c\/p\u003e\u003cdiv style=\\\"display:flex;flex-wrap:wrap;gap:0;margin:0;padding:0;line-height:0;font-size:0;\\\"\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/5c0602ea-4720-45af-97df-fd0529961916.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/ed4349e0-62cd-413d-8116-b0e61c25891a.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/9d15986f-6291-4a9f-b8eb-4ce256a65a86.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/b891288f-acbc-4235-aa6a-27dca12a4b0a.__CR0,0,970,600_PT0_SX970_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003c\/div\u003e\u003ch5\u003eWelcome to the Next Level of Rock Tumbling with KoolStone C1 Pro\u003c\/h5\u003e\u003cp\u003eYou didn’t just choose a tumbler — you chose performance.\u003c\/p\u003e\u003cp\u003eWe can’t wait to see the brilliant finishes you create with your C1 Pro. Share your polished masterpieces with us, and your work may be featured on our Amazon page and social media. Your craftsmanship deserves the spotlight.\u003c\/p\u003e\u003cp\u003ePro Tip: For that perfect shine, pair your tumbler with our high-quality polishing grits kit (don’t forget to add it to your cart!). Combined with soap water, mineral oil, and patience, they’ll transform rough rocks into dazzling jewels for jewelry, crafts, or your collection.\u003c\/p\u003e\u003cp\u003eHave concerns? We’re here to help—quickly and cheerfully. Just reach out, and our team will ensure a seamless experience. Your satisfaction is our priority!\u003c\/p\u003e\u003cp\u003eKeep creating, keep inspiring, and let’s bring your vision to life—together.\u003c\/p\u003e\u003cp\u003eKoolStone– Where Imagination Meets Craftsmanship.\u003c\/p\u003e\u003cp\u003e↓Add KoolStone 4 LBS Polishing Grit Kit for long-term polishing needs—better value per use!\u003c\/p\u003e\u003cp\u003eFAQs About KoolStone Rock Tumblers\u003c\/p\u003e\u003cp\u003e1. Can you put regular rocks in a rock tumbler? And Can the rock tumbler be used for sea glass?\u003c\/p\u003e\u003cp\u003eYou will want to avoid soft rocks as they might just fall apart when you add them to a rock tumbler and some really hard rocks might damage your tumbler. And the rock tumbler can be used to polish sea glass effectively!\u003c\/p\u003e\u003cp\u003e2. How long does it take to polish rocks in a rock tumbler?\u003c\/p\u003e\u003cp\u003eFor beginners, the answer can come as a bit of a shock as it could be one week or one month to tumble rocks to a polish that you are happy with. Patience is a virtue in this hobby. The end result can be worth the wait as they look great when they are finished.\u003c\/p\u003e\u003cp\u003e3. If my belts broken, how can I do?\u003c\/p\u003e\u003cp\u003eBelts might break after a long time use. No worries, please feel free to reach out us to get the replacement.\u003c\/p\u003e\u003cp\u003e4.What other items can you tumble?\u003c\/p\u003e\u003cp\u003eIf you’ve found some coins then you can throw those in the rock tumbler. A rock tumbler will help clean it giving it a nice shine.\u003c\/p\u003e\u003cp\u003eOther than coins you can also place shells inside a rock tumbler.\u003c\/p\u003e\u003cp\u003e1. Mind the Noise: Tumbling machines can be quite noisy. We recommended that you keep it in the garage so that you don\u0026#039;t disturb your neighbors.\u003c\/p\u003e\u003cp\u003e2. Don\u0026#039;t wash grits down the drain! It will create a clog that is impervious to drain cleaner. Rinse the grits steps outside using a garden hose.\u003c\/p\u003e\u003cp\u003e3. Use mineral oil for extra shine! If you want your finished stones to be really shiny, coat and polish the stones with mineral oil.\u003c\/p\u003e\u003cp\u003e4. Notice: If any part is missing, please take a moment to reach out to us for a replacement or compensation. Thank you for your patience and understanding!\u003c\/p\u003e\u003ch4\u003eFrom the Brand\u003c\/h4\u003e\u003cdiv style=\\\"display:flex;flex-wrap:wrap;gap:0;margin:0;padding:0;line-height:0;font-size:0;\\\"\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/12adcd9c-2afa-42a3-837c-832f7501b2d5.__CR0,0,1464,625_PT0_SX1464_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/84404f9c-196c-4b8a-837e-486f1d1de2a0.__CR0,0,362,453_PT0_SX362_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/b8940820-deb9-4d6e-a46d-a1ec6ea35099.__CR0,0,332,364_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/f0d9ad44-7bd9-4995-adfe-c2f8aedf7b62.__CR0,0,332,364_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/805e1387-11f9-4e45-97bc-e61ed916ae9d.__CR0,0,332,364_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/6c6d9688-d24f-40cf-b909-39ebc742b65d.__CR0,0,332,364_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 auto;min-width:120px;max-width:100%;height:auto;object-fit:contain;margin:0!important;padding:0!important;display:block;border:0;vertical-align:top;line-height:0;\\\" loading=\\\"lazy\\\" \/\u003e\u003c\/div\u003e\u003ch5\u003eNew Arrivals #1 Pick\u003c\/h5\u003e\u003cdiv style=\\\"display:flex;flex-wrap:wrap;gap:0;margin:0;padding:0;line-height:0;font-size:0;\\\"\u003e\u003cimg src=\\\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/b5be2585-b063-4e5f-ad6d-2340a21f09f6.__CR0,0,498,546_PT0_SX166_V1___.jpg\\\" style=\\\"flex:1 1 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