abrasive tools model:3",4",5",6",7" grite:#50#100#200 ... fade, won the acceptance of the customers.diameter :3",4",5",6"thickness 4.0MMgrite #50,#100,#200 ... 400,#800,#1500#,#3000working conditions under 5000r/mpressure under 3-5kg/cm2application for grinding and polishing of granite ... and hard marble in automachine ABRASIVE TOOLS RESIN EDGE POLISHING WHEEL POLISHING PAD FOR FLOOR WET ...