1.APPLICATION Stainless steel , High Alloy steel , Cast Iron , M.D.F 2. FEATURE High Strength, Heavy Duty Removal, Good 1. ... steel , High Alloy steel , Cast Iron ,Steel , normal steel , M.D.F2. FEATURE High Strength, Heavy Duty Removal, Good Toughness,3 ... ,150180, 220,320180x22 (7 INCH )40,60,80FDA180850010 / 200 soft flap disc /flap wheel for steel