DAMO 4DAA 4-Inch 3-Step Dry/Wet Diamond Polishing Pads for Granite Polish/Concrete Polisher, Set of 3 For granite,marble and engineered stones; Polishing time reduced by 50%; Utilizing the latest Ceramica Tech., the pads last up to 2X vs. regular pads; Dry or wet application; Maximum Speed 4,000RPM.