Please use less than 5000RPM to avoid potential damage to the surface. 【Wide Application】4 in Diamond polishing pads are suitable for all solid surfaces. Hgh-Qualty Damond Polshng Pads Kt 【Professional Diamond Polishing Pad Set】You will receive 12 pieces of 4 inch diamond polishing pads (grit #50, #100, #150, #300, #500, #800, #1000, #1500, #2000, #3000, #5000, #8000), 1 piece of wool felt polishing pad, 1 piece of sticky disc and 1 piece of rod. Stone polishing fast, high brightess Best Diaond Polishing Pads for Stone and Concrete – Best Hoe Tools Reduces dust and speeds up polishing for granite, marble, concrete & more. [Premium Diamond & Resin Pads] High-performance granite polishing pads made with premium diamond and resin for fast grinding, excellent flexibility, and long-lasting wear resistance 【Easy to Use】Hook and loop design is very convenient for you to install or remove polishing pads. Do not use with high speed grinders. Such as rock, granite, quartz, marble, concrete, tile, glass, etc. Grinder Tool STADEA Diamond Polishing Pads For Angle Grinder, 4 Inch Wet/Dry 8 Piece Set Granite Stone Concrete Marble Concrete Grinding Disc Can be used Dry but Best Results are with Water.