8Pcs Diamond Polishing Pads 4 inch Wet/Dry Set For Granite Stone Concrete Marble (S280) Grits: 50, 100, 150, 500, 800, 1500, 3000 100% brand new and high quality. Sharp, wear-resistant and high efficiency. Optimal RPM 2200, Max RPM 12000. Works good for Wet or Dry polishing of stones. Perfect for Granite, Concrete, Marble, Stone, Tiles etc. The back color is random Material: diamond Powder Pro Grade Wet/Dry, Diameter 4 inch , Height 3 MM, Backed Flexible. Aggressive and Durable made with quality Diamond Powder impregnated in Resin. Please add water when you operate. 1 x Grit 50, 100, 150, 500, 800, 1500, 3000 Polishing Pads(one of each) Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed