... High Strength, Heavy Duty Removal, Good 1. APPLICATIONStainless steel , High Alloy steel , Cast Iron ,Steel , normal steel , M.D.F2. FEATURE High Strength, Heavy ... ,320150x22 (6 INCH )40,60,80FDA1501020010 / 200100,120,150180, 220,320180x22 (7 INCH )40,60,80FDA180850010 / 200 soft flap disc /flap wheel for steel