3M 3M Scotch-Brite Non-Woven Aluminum Oxide Aluminum Surface Conditioning Hook & Loop Disc - Medium Grade - 4 1/2 in Diameter - 54218 61500313632

3M Scotch-Brite non-woven aluminum surface conditioning hook & loop disc uses aluminum oxide as the abrasive material and has a diameter of 4 1/2 in. Since this product is non-woven, grade is generally used to describe the abrasiveness; with the 54218 having a medium grade. All abrasive products that rotate or spin, such as the ones in this category, have a maximum speed at which you can run them. This 3M aluminum surface conditioning hook & loop disc can be run at a maximum speed of 9600 RPMs.