This kit is nothing more than scrap. Hole saws are so soft they're useless, the jig is a little too narrow to fit in every 1 3/4 inch door I've tried making accurate holes impossible. Don't skimp and make the same mistake I did, it costs $10 to get a decent quality rig. So I just screwed up my doors and again cost me twice as much to get usable hole saws. It shouldn't even be for sale.