Built with a high-speed cutting steel with a chamfered edge, this bi-metal self-feeding bit drills smooth, clean holes through hardwood, wet wood, or 4x4s with less time and effort. It features a replaceable lead screw and can be sharpened with a file. This drill bit has an overall length of seven inches, a 1 1/4-inch diameter, a 1/2-inch shank, a 3/4-inch pipe entrance, and a 1 1/8-inch tubing entrance.