Cornwell Quality Tools 3” abrasive discs, No. MACW62773, are a thick layer of abrasive grain bonded to a cloth backing material. Ideal for stock removal, deburring, blending and cleaning, the discs are type III roll-on/roll-off style for easy removal and application. They have a grit of 120, are a coated abrasive with maximum rpm of 20,000, and come in a 50 pack.