Easy-grip handle gives a secure hold and complete control over joints. Three hardened steel drill guides keep specialized stepped bit and driver bit at the precise, optimal angle. Spacer rings ensure accurate deck board spacing for proper drainage and longer deck life. Works with 4/4 to 5/4 (3/4 in to 1-1/8). Not designed for use with 2x material including 2x4s, 2x6s, 2x8s, etc. Includes Deck Jig, 100 Protec-Kote deck screws, 6 in Deck Jig drill bit, 6 in KTX square driver bit, (3) 5/16 in and 1/4 in spacer rings,(2) stop collars, an allen wrench, instructional DVD and carrying case.