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Different colors represent different magnetic field intensity\u003c\/li\u003e\u003cli\u003eUnique Design: The magnetic field paper is made of plastic film that contains a ferromagnetic slurry of fine nickel, and the frame outside can fix and protect the film\u003c\/li\u003e\u003cli\u003eWidely Used in Daily: Ideal for observing all kinds of magnets such as SmCo, AlNiCo, Neodymium and Flexible Magnets. Clearly view magnetic field in objects. 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Place the film as close as possible to the magnet\/item to observe the pattern changes. Reusable and automatic recovery. The stronger magnets, the better the results. Warmming Tips: We are committed to making excellent products, if you are not satisfied with your order, please feel free to contact us for good solutions. Package includes: 1 x Magnetic viewing film \u003c\/p\u003e\u003c\/div\u003e\",\"59417673203793\":\"\u003ch4\u003eAbout This Item\u003c\/h4\u003e\u003cul class=\\\"about-this-item\\\"\u003e\u003cli\u003eMagnetic Field Display: Brown magnetic nanoparticles film is used to show magnetic field, clearly showing the patterns of magnetic field lines of magnets. Different colors represent different magnetic field intensity\u003c\/li\u003e\u003cli\u003eUnique Design: The magnetic field paper is made of plastic film that contains a ferromagnetic slurry of fine nickel, and the frame outside can fix and protect the film\u003c\/li\u003e\u003cli\u003eWidely Used in Daily: Ideal for observing all kinds of magnets such as SmCo, AlNiCo, Neodymium and Flexible Magnets. Clearly view magnetic field in objects. 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Place the film as close as possible to the magnet\/item to observe the pattern changes. Reusable and automatic recovery. The stronger magnets, the better the results. Warmming Tips: We are committed to making excellent products, if you are not satisfied with your order, please feel free to contact us for good solutions. Package includes: 1 x Magnetic viewing film \u003c\/p\u003e\u003c\/div\u003e\",\"59417673269329\":\"\u003ch4\u003eAbout This Item\u003c\/h4\u003e\u003cul class=\\\"about-this-item\\\"\u003e\u003cli\u003eMagnetic Field Display: Brown magnetic nanoparticles film is used to show magnetic field, clearly showing the patterns of magnetic field lines of magnets. 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