The Mortise Lock Installation Kit comes with everything you need to cut professional quality, fast and accurate mortise pockets! No other combination of tools can produce such accurate results every time. The new jig is quick and simple to set up, self centering and locks onto the door edge securely. Quick change threaded cutters means cutters can be changed in seconds, without removing the jig from the door. For use on hard wood, soft wood, composite doors and even aluminum doors (with the use of special cutters). Protect and store tools in a custom heavy duty case. In addition to the self-centering Mortise Jig with aluminum housing, carrying case and instructions, the Kit includes: 7/8″ Wood Screw Cutter, 1″ Wood Screw Cutter, 1-1/4″ Wood Screw Cutter, Long Boring Shaft. The Mortise Installation Jig Installation Kit is also expandable to core doors and prep for hinges and strikes, with the appropriate attachments.