... grinding away excess stone to prepare for polishing.Drum Wheel is used for polishing stone side after finishing Zero ... Zero Tolerance Wheel is metal and bond of Drum Wheel is resin. Zero Tolerance WheelZero Tolerance Wheel and Drum Wheel: the segments ... /8-11,M142",3",4"Coarse,Medium,FineZero Tolerance Wheel and Drum WheelZ06:ElectroplatedItem No. ConnectionDiameterGritZ065/8-11,M142 ...