Cubitron II 33389 Premium Quick-Change Grinding Disc, 3 in Dia, 36+ Grit, Ceramic Abrasive, 20000 rpm, Purple

3M's Cubitron II Roloc Fiber discs 786C is built for grinding, weld blending, deburring and other tough metal finishing jobs. 3M precision shaped grain a tough, hard, sharp ceramic abrasive is resin-bonded to a stiff fiber backing. This disc lasts significantly longer than conventional ceramic grain discs, delivering a lower cost per grind with fewer disc changes.