... 16,115*22,125*22,150*22,180*22mm material:ZIRCONIA ALUMINA revoluting speed:12500r/min backing:fibergals Radial flap ... ,light industry,electrical household applicances,steel,decoration etc.Particularly in grinding and polishing the irregullar surface of workpiece.size: ... *16,115*22,125*22,150*22,180*22mmmaterial:ZIRCONIA ALUMINA(made in China /German/Norton)revoluting speed:12500r/minbacking:fibergals ...