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™. Comes complete with an included 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 ¼” quick change chucks.