2" 50mm Abrasive Non Woven Scotch Type Scouring Polishing Sanding Abrasive Ball 40 Grit New 40 GRIT non-woven material that is MORE AGGRESSIVE material in the ball form Scuff tool is ideal for odd shapes, inside tubes, gasket removal Works in any drill chuck, Provides consistent finish, For heavy scrubbing, removal of rust scale Brand Name Aluminum oxide abrasive Works at a variety of speeds, up to 12000 RPM max, Zinc-plated 1/4" (6mm) steel shank