diamond polishing pad 1. wet grinding marble, granite.,etc 2. good quality,good ... .3. Polishing Pads for Stone with Long Life Feature:Polishing pad for wet polishing of marble, granite and concrete.,etc. It ... concrete. Grit size: 50#,100#,200#,400#,800#,1500#,3000#, white buff, black buff. Size Range: 3"-7" Thickness: 3mm/5mm ...