... 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- ... covers 50,150,300,500,1000,2000,30004. 4" or customized sizes5. The exclusive thickness 4mm represents ... stone, marble,granite,terrazzo, etc.9, For only floor removal, renovation, grinding, polishing.9. Fit on hand ...