Super-hard carbide burrs used in a high-speed die grinder can really make tough jobs easier. The Aluminum burr makes quick work of shaping aluminum and other soft metals. Use with Grinder's Grease (13119) for a smoother cut and for easier cleaning. Coarse cut flutes readily shed metal build-up. For cutting Steel and Iron try the (46058) 6in. Carbide Burr Set (includes 4 profiles).