This hardened-steel driver bit features a KTX #1 square tip for positive bit engagement and a Quick-Change compatible shank. It was designed specifically for use with the Kreg Deck Jig™, and comes with an Allen wrench and depth collar to ensure precise depth setting. This Deck Jig™ Driver Bit and the KTX Drill Bit, which came with your Deck Jig™, are fully compatible with standard 1/4" (6mm) Quick-Change chucks.