Diam*width*shank Grit Maxrpm 2*1*1/4 Coarse,Medium,Very fine 22.000 3*1/2*1/4 Coarse, Medium, Very fine 18.000 3*1*1/4 Coarse,Medium,Very fine 18.000 3*2*1/4 Coarse,Medium,Very fine 9.000 Characteristics: Finishing and buffing applications cleaning and deburring,ideal for a wide variety of material such as steel,cast iron,stainless steel high alloys and aluminum and non ferrous. Consistent finishi throungout their long life. offer great flexibility and can be used wet and dry.