Kreg Deck Bit, Collar & Wrench - 664688 Single-piece, stepped drill bit that drills concealed holes with the Kreg Deck Jig®. Includes rugged depth collar which controls the depth of drill bit when drilling. Depth collar is secured in place on the bit with the hex wrench, and is fully compatible with standard 1/4" quick-change chucks. 664688 1/4"
