ENGINEERED TO POLISH STONE SUCH AS GRANITE ALSO POLISHING GLASS POLISHING PADS FOR STONE OR GLASS Grit=50grit, 150, 300, 500, 1000, 2000,3000 AND BUFF(the factory will not produce buff any more). 100mm diameterSUGGESTION:SHOULD BE USED WET! IDEAL FOR AIR GRINDERS OR...