Grits: 50, 100, 150, 500, 800, 1500, 3000100% 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.Color: GrayThe back color is randomMaterial: diamond PowderPro Grade Wet/Dry, Diameter 4 inch , Height 3 MM, Backed Flexible.Aggressive and Durable made with quality Diamond Powder impregnated in Resin.Size: 100 mm/4 inchQuantity: 32pcsPlease Note:Please add water when you operate.Packaged included:4 x Grit 50, 100, 150, 500, 800, 1500, 3000 Polishing Pads(one of each)4 piece x SuckerNote: Random color, don't accept the specified color.Only the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.