Metal/Resin Discs - Surface Grinding: 1.Grit: 50# ,100#,200#,400# 2 ... ",8'',10" 3.Professional Manufacturer Metal/Resin Discs - Surface Grinding: Grit:50#,200#,400#Dia:4",6",8", ... 96kg The Metal Resin Discs have been designed for wet surface grinding and polishing natural stone. It has premium ... the resin only stages.Also see Resin Discs for surface polishing natural stone.The Metal Resin Discs are ...