DESIGN FOR PRECISION: Sharp, wear-resistant and high efficiency. The Pads are Color Coded per Grit being easy to identify and a different professional find. Optimal RPM 2200, Max RPM 12000. Operate between 2500-5000 RPM to avoid potential damage to your surface. HIGH : polishing pads are made of diamond , aggressive and Durable. Buckle backed polishing pads for easy connect and removal. WIDE APPLICATIONS: For Wet and Dry Polishing, for results use polishing pads with water. Great For All Solid Surface Materials. Perfect for Granite, Concrete, Marble, Stone, Tiles etc. Features: and high . Pro Wet/Dry, Diameter 3inch , and loop Backed Flexible. colour: random colors,'t accept the specified color Material: Diamond size: 80mm Package Contents: 10*Polishing Pads(50#, 100#, 150#, 300#, 500#, 800#, 1000#, 1500#, 2000#, 3000# Each one) 2*Backer Pad(with ) NOTICE The lower grit pads 50, 100, 150 works very for dry usage. Lower grit dry grinding makes saw marks removal on the stone surface easy. Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.