Worked great for my mailbox to replace a worn out lock. Had to get a different nut (5/16-24 NF) to attach the lock arm (not included) because my old lock used a smaller nut to attach the arm. A couple small holes in the outer shell allowed me to add just a little bit of graphite to make the lock twist and key insertion butter-smooth. This should last a long time.
Replaced mailbox lock when previous homeowner moved out. Tried Home Depot and lowes locks but they did not fit correctly. This one is a perfect fit and I was able to transfer parts from the old one to the new one.
I change a lot of mailbox locks and these are of extremely high quality stainless steel so they're super tough to drill and they fit in the newer high security cluster boxes, I'll definitely purchase again