... diamond grinding and polishing pad 2)Thickness:12mm 3)Grit 50,150,300,500,1000,2000,3000 ... 4)Good for stone,marble 3" resin bond floor grinding and polishing pad JS-003----- We supply premium grade diamond ... no. covers 50,150,300,500,1000,2000,30004. 3" or customized sizes5. The exclusive thickness 12mm represents high ... hand grinders and floor grinder or polisher.Pictures: 3" diamond polishing pad