Product Name: 4"/100mm Diamond Dry polishing pads For Granite Marble Ceramic Quantity: 7pcs/set Specification: Diameter 100mm/4inch, Thickness 1.5mm, grit: #50, #100, #200, #400, #800, #1500, #3000, Feature: 1. For polishing granite & marble and all kinds stones. 2. Flexible and smooth polishing , suitable for different shape polishing 3. Dry polishing, working without water, convenient and less pollution 4. high quality Diamond and Resin bond,Consistently has high quality and better polishing results. 5. Professional for the polishing stone's surface special equipment. 6. Recommended speed is 2400RPM, Max capacity is 4000RPM ================THE END================