1) 3'' Resin diamond grinding and polishing pad 2)Thickness:12mm 3)Grit 50,150,300,500,1000, ... )Good for stone,marble 3" resin bond floor grinding and polishing pad JS-003----- We supply premium grade diamond pads only Features ... :1. JS designed2. Use both wet and dry, wet better3. Grit no. covers 50,150,300,500,1000 ...