DeWalt Extreme Diamond Metal Cutting DiscDeWalt Extreme Diamond metal cutting discs are intended as a direct replacement for bonded abrasive cutting discs. They are suitable for use on steel, stainless steel, cast iron, rebar, sheet metal, aluminium and non-ferrous metals.Features & Benefits• Economical: 1000+ cuts can be achieved with one disc• Increased safety: solid steel body greatly reduces risk of disc breakage• No shelf life: does not deteroriate over time (in proper storage conditions)• Diameter retention: each disc maintains its original diameter until the last cut• Less dust: substantial reduction in airborne particles