"I bought this lock to fit to a hollow door I bought from a well known DIY store that has a very limited block on which to mount the handle and lock. I didn't want to channel out a large section of the door to fit a combined handle/lock system, so I fitted this lock and a similar rose mounted handle. Unfortunately the door block was not where it should have been so the screw mounting for the lock rose was marginal. If the lock had a through bolt facility it would make this lock even more appropriate for hollow doors. I rated reliability at 3 stars as the lock has only been installed a few days but it has a nice smooth operation so I expect there will be no problems."