13 Packs 4 Inch Diamond Polishing Pads With 5/8??-11 Backer Pad 12Pcs Wet/Dry ?UPGRDED GREAT VALUE SET?12 pieces of 4-inch granite/marble polishing pads (Grit 50#, 100#, 150#, 300#, 500#, 800#, 1000#, 1500#, 2000#, 3000#, 5000#, 8000#), Comes with 1 PCS upgraded velcro rubber backing pad (5/8 - 11 thread), features greater flexibility, durability, absorption, will more effective at removing scratches and achieving a high-gloss finish. ?WET/DRY POLISHING?AxPower diamond polishing discs are designed for wet and dry polishing, 50-150 grit suit for wet or dry polish; 300-8000 grit must be used with water to ensure the best polishing results. Please follow the recommended rpm, use below 5000RPM to avoid potential damage to the surface. ?PREMIUM QUALITY?These granite/marble polishing kit are made of high-quality diamond powder and resin powder, aggressive and sturdy. Hook and loop backing pad is made with premium-grade rubber, semi-flexible backer. The flexible design can adjust to different shapes of surface like corner or edge or curve surface. ?EASY TO USE?Hook and Loop design is very convenient for you to install or remove the polish pads. Brass arbor 5/8''-11 thread backing pad will allow you to connect to variable speed polisher, grinder, household power drill, or other rotary tools. NEVER use with high-speed grinder. Please follow the recommended rpm, use below 5000RPM to avoid potential damage to the surface. ?WIDE APPLICATIONS?Great for all solid surface materials such as granite, concrete, marble, quartz, stone, tiles, glass, etc. Ideal for countertops, tabletops, and splash-backs, and any other job for residential or commercial environments. For wet and dry polishing, for best results use polishing pads with water.