Milescraft 1338 Lock Mate PLUS – Self Clamping, Professional Door Lock Installation Kit, Door Lock Jig for Wood/Metal Doors with 1-3/8” and 1-3/4” Thickness. Bi-Metal Cobalt Hole Saws Included

Very helpful, doesn’t slip. Hole saws are fairly decent as well. I built 15 interior doors for my place. Did them all with this, saws are dull now but still a good investment.

The jig clamped securely to the door and made matching the holes a snap. The metal inserts make it feel more sturdy also. The hole saws were of good quality although having used them once I cannot speak to durability. I had to widen the hole for the knob as there was already a knob but no deadbolt on this door. The old hardware was smaller than new stuff so I had to solve that issue and using the smaller hole saw to line up the jig worked great. I was afraid that it would not work as well since I wouldn’t see the pilot hole and just had to go all the way through from one side. The saw and jig did great and I didn’t have a jagged exit on the other side. FWIW it was a wooden door. The only difficulty, and this is not unusual of this kind of hole saw, is that getting them off the adapter is tough. I hit the thing with penetrating oil and it helped but the adapter for larger one is pretty stuck. Fortunately that doesn’t keep you from getting the smaller one on the pilot drill and the smaller one is easier to remove. If you need to install door hardware, this kit is well worth it.

This works great and its easy to use! I highly recommend for those DIY folks!

works awesome no issues installing lock

Does a decent job. Yes big $ ones will hold up longer but if you have a handful of doors this works great. Well thought out piece at a good price like most MIlescraft products.