Stadea Diamond Polishing Pad Concrete - Granite Marble Floor Polishing 5" Dry Grit 400, DPPD05SPRA400G1P STADEA 5" Diamond Dry polishing pad 1 Piece: GRIT 400 Professional Grade 5" Diameter Dry Diamond Polishing Pad for Granite, Marble, Concrete, Stone, Glass etc polishing 1.2 MM high, velcro backed and extra flexible to polish contoured (Demi, bullnose etc) or straight surfce 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. Can be used Wet as well