Like any. Simple tool, it only works simply on simpler locks. Got mine, and once you get to water pin locks, one needs advanced knowledge to make this work. An extra tension wrench might help. Special tools for special locks. This ain't that, but it does work. You just need patience. For multiple rentals, go to a big lock company & purchase a master lock system. That allows for individual keys for each rental unit, not operable by each other tenants' keys. But the manager/landlord retains ONE MASTER KEY FOR ALL. Worth the investment.

This is a great little tool. Go to You Tube and watch a video of how to use it and you will be amazed.

I just got the pick gun in. Tried on my own home, no luck getting door open. I was short one of the washers, but dont feel that has made the difference. Really hope I can figure this out, I have rentals and need to get into one today.

Had this for months does not open door locks waste of good money buy cheaper sets from here they at least work

I am pleased with the over all quality of this pickgun. I'd buy it again.

This auto type picker works really well and has performed solidly for our family. We do maintenance and repairs so it comes in super handy when a home owner has forgotten his or her keys.