POLISHING DISC model:4",6",7",8",10",12" grite:BUFF (WHITE,BLACK,GREEN,RED) use for grinding stone Apply:granite and ... marble POLISHING BUFF GRINDING DISCmodel:4",6",8",10"grite:#50,#100,#200 ... ,#400use for grinding stonecolor : white ,red ,black ,yellow Apply:granite and marbleCharacteristics: hight efficiency,long ...