OX BLOX MAXX Heavy Duty Trailer Jack Block - 10,000 lbs. Capacity - 10.5x10.5x4.5 Inches - 6.8 lbs Weight - 5th Wheel RV Jack Block for 9" Round Feet - 9" and Smaller Feet Nest Securely Within Ridges

OX BLOX MAXX Heavy Duty Trailer Jack Block - 10,000 lbs. Capacity - 10.5x10.5x4.5 Inches - 6.8 lbs Weight - 5th Wheel RV Jack Block for 9" Round Feet - 9" and Smaller Feet Nest Securely Within Ridges