The DEWALT DD5113 IMPACT READY 13/64" Inch Titanium Nitride Coated Drill Bit is designed for Metal or Wood. This bit is ground from solid 1-piece design and is up to 5 times more durable than the current 2-piece conventional product. The patented web taper increases the rigidity of the bit to decrease the potential for bit breakage and the patented pilot point tip allows users to drill holes faster than the conventional split point product and offers clean burr free holes with reduced bit walking. Common users include electricians, HVAC, mechanics, glaziers and GC's. This drill bit features a 1/4" Hex shank, 13/64" bit diameter, Flute Length 1-5/16 In.