Description:1. Aggressive and durable made with Diamond Powder impregnated in Resin.2. Come with 1#(1#=150#), 2#(2#=300#), 3#(3#=500#), 4#(4#=1000#), 5#(5#=2000#) diamond Dry Polishing Pads.3. 4-inch pads are designed for Dry concrete polishing, Dry marble polishing, Dry travertine terrazzo polishing, Dry granite polishing.4. Hook and loop backed polishing pads with water hole in center for easy connect and removal.5. Flexible and can polish either contoured surface like Ogee, full bullnose, half bullnose, bevel, demi or flat surface.6. Maximum RPM 12000, a rubber backer with M10 thread.7. Dry polishing pads can be used on low speed and variable speed grinder or polishers. Dry polishing is preferred for onsite stone polishing when wet polishing is impractical.Specifications:Product Name: Diamond Dry Polishing PadMaterial: Diamond Powder, ResinPolishing Pad Size: 100mm x 13mm x 4mm / 4-inch x 0.5-inch x 0.16-inch (OD*Inner Dia*T)Revolutions Per Minute: 12000 (Max.)Grit: 1#(1#=150#),2#(2#=300#),3#(3#=500#),4#(4#=1000#),5#(5#=2000#)Backer Size: 100mm x 35mm / 4-inch x 1.4-inch (D*H)Female Thread Diameter: M10Color: Green, Light Green, Yellow, Red, BlueWeight: 144gPackage Content: 5 x Diamond Dry Polishing Pads, 1 x Rubber Backer Polishing Instructions:1. Always wear protection for eyes, nose, hand, safety glass, gloves. Never use high speed grinders or exceed max rpm.2. Fasten the stone securely, it should not slip while polishing. 3. Attach Hook and Loop backing pad and polishing pads to polisher in center to avoid wobble.