STADEA 4" dry diamond Marble polishing pads for granite Concrete Stone Marble Polishing : 2 pcs Set Grit 1500 STADEA Super A 4" Diamond Dry polishing pad 2 Pieces: GRIT 1500 Professional Grade 4" Diameter Dry Diamond Polishing Pad for Granite, Marble, Concrete, Stone, Glass etc polishing 1.2 MM high, velcro backed and flexible to polish contoured (Demi, bullnose etc) or straight surface Designed for Dry Polish, Dry pads Works without Wet Polisher, no watery mess, Optimal RPM 1800 Max RPM 3000 Works great on Granite, Concrete, Marble, stones, glass etc.