4''diamond dry polishing pad 1)diameter:80,thickness:2.0, 2)usage:for granite,marble,concrete,etc 3)dry use 4) ... ,150,200,300,400,500,800,1000,1500,2000,3000.2, This kind of polishing pad only use in dry condition ... use, Fast and long life time for polishing Item No DDP-2 Thickness 2.0mm Diameter 100mm Grit 50,100,150,200,300 ...