... ",7",9'',10'' 2.for rough medium fine floor 3.High efficiency and durable Turbo diamond grinding wheel 1.Size:4",4.5 ... ",5",7",9'',10'' 2.for rough medium fine floor 3 ... one of leading manufacturer in China and supplier of Diamond tools , Grinding tools, saw blade, drills, more than 30 years' manufacture experience .Good ...