... 3'' Resin 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 ... covers 50,150,300,500,1000,2000,30004. 3" or customized sizes5. The exclusive thickness 12mm ... : griding for concrete, etc. especially better for stone, marble,granite,terrazzo, etc.9, For only ...