MADE OF CORUNDUM, USED ON RIGHT ANGLE GRINDERS FOR SANDING AND WELD SMOOTHING.WITH A BACKUP PAD THAT IS THE SAME DIAMETERT dimensionsin in mmHOLE size in mm grit sizeabrasive 10016 P:16,24,36,40.45.50,60,80,100,120,150,180A,WA.C.GC 11522 125 22 15022 180 22