... 4'' floor grinding and polishing pad 2)Thickness:3mm 3)Grit 50,150,300,500,1000,2000,3000 4 ... )High diamond ratio 4" resin bond floor grinding and polishing pad JS ... 50,150,300,500,1000,2000,30004. 4" or customized sizes5. The exclusive thickness 4mm ... floor removal, renovation, grinding, polishing.9. Fit on hand grinders and floor grinder or polisher.Pictures: 4" floor polishing ...