Cut through hardwood, wet wood or 4x4s with this bi-metal self-feed bit. Built with a high-speed steel cutting edge and a chambered edge, this durable drill bit produces very clean holes fast and easy. It features a replaceable lead screw and can be sharpened with a file. It measures seven inches in overall length, 3 5/8 inches in diameter with a shank size of 1/2 inches, a three-inch pipe entrance, and a 3 1/2-inch tubing entrance.