Used in polishing stones,such as marble,granite.Effective,smooth,no scratches. Dry use. Dry Polishing Pad New Great Diamond Tools CO.,ltd have produced the dry polishing pad which is smaller than normal ones. It will meet different customers' demands. Dry Use.The specification is as follows:Diameter : 50mm,80mm, 100mm,125mm,150mm,178mm.Grits: #50--#3000,buff white and buff black.