... hard metal,like general steels,ferrous metal,aluminium,iron,angle iron,brass,bronze,carbon steel,casting,railway,non-ferrous metal ... marked on wheel.3.Do check mounting flanges for equal size,relieved as required and correct diameter.4.Make ... tool so that the wheel is at a perpendicular angle to the workpiece being cut;5.Keep a light ... 5" inch resin bonded cut off wheel for angle grinders