Honestly this product was the biggest disappointment and a waste of money. When I first used it, part of the drill bit was so fused that I couldn't separate the door handle drill bit to attach the door latch drill bit. So I ended up using a 1" drill bit to get the job done. Then, since the jig part is made of plastic, it broke almost immediately afterwards. The part of the template that allows you to adjust the depth broke so I had to twist it together with a piece of wood to finish the job. The door is ready, but now we need to look for another option for the rest of the doors.