... steel , High Alloy steel , Cast Iron , M.D.F 2. FEATURE High Strength, Heavy Duty Removal, Good 1. APPLICATIONStainless steel , High Alloy steel , Cast Iron ,Steel , normal steel ... , M.D.F2. FEATURE High Strength, Heavy Duty Removal, Good ... ,60,80FDA180850010 / 200 soft flap disc /flap wheel for steel