... *16,115*22,125*22,150*22,180*22mm material:ZIRCONIA ALUMINA revoluting speed:12500r/min backing:fibergals,plastic Radial flap wheel ... :100*16,115*22,125*22,150*22,180*22mmmaterial:ZIRCONIA ALUMINArevoluting speed:12500r/minbacking:fibergals ...