Features: 100% brand new and high quality. Can be used dry but the best results are with water. Perfect for Granite, Concrete, Marble, Stone, Tiles, etc. Pro grade Wet/Dry, hook and loop backed flexible. Aggressive and sturdy made with quality diamond powder impregnated in pesin. HOW TO INSTALL Step 1 Connecting the 8mm Shank. Step 2 Attach the polishing pad hook and loop side to the backer hook and loop side. Step 3 Installed on the grinder or polisher. DETAILS Diamond Material Aggressive and durable made with quality diamond powder impregnated in the resin. Strong Sticking Ability The surface of the tray is closely arranged with hooks, which are not easy to run away. Nylon Velvet High-quality nylon velvet, firmly boded, can be repeatedly torn and pasted. Package Included: 1 x 50 Girt Polishing Pad; 1 x 100 Girt Polishing Pad;1 x 150 Girt Polishing Pad; 1 x 300 Girt Polishing Pad; 1 x 500 Girt Polishing Pad; 1 x 800 Girt Polishing Pad; 1 x 1000 Girt Polishing Pad; 1 x 1500 Girt Polishing Pad; 1 x 2000 Girt Polishing Pad; 1 x 3000 Girt Polishing Pad; 2 x Hook and Loop Backer Pad; 2 x 0.3-inch(8mm) Shank. NOTICE The lower grit pads 50, 100, 150 works very well for dry usage. Lower grit dry grinding makes saw marks removal on the stone surface easy. The higher grits must be used with water for the best results.