Carbide Bit for Dremel Trio™ is used for making quick plunge cuts in virtually all materials, and for cutting soft wood, hardwood, plywood, composites, laminate, sheet metal, engineered flooring, drywall, acoustic tile, plastics, fiberglass, vinyl siding and aluminum. Bit powers through hardwoods like oak while providing up to 5x more life than a standard multipurpose bit. Also cuts steel up to 22 gauge. 3/16 inch shank. Dremel number TR563.