The 7-Piece Contractor’s Selfeed Bit Kit is a assortment of the high-performance Selfeed drill bits you need on the jobsite. Selfeed drill bits deliver speed and endurance for repetitive drilling of large holes. Designed for any trade that demands woodcutting for installing pipe and conduit, Selfeed bits feed into work without pressure and provide faster boring of clean, accurate holes. The bit-shave improved balance with reduced runout, while the hex shank provides a secure gripping surface for the drill chuck. Every Selfeed drill bit is coated with a rust inhibitor. Built to last and designed to perform, these Selfeed bits are re-sharpenable so you can keep them cutting like new. The kit includes Selfeed bits in diameters: 1 in., 1-1/8 in., 1-1/4 in., 1-1/2 in., 1-3/4 in., 2-1/8 in. and 2-9/16 in. in an impact resistant carrying case.