We have given an extra key out to several workers since buying our new home 4 years ago and it was time to change the locks. This set will allow us to rekey a lock at any point without having to change the lock itself. I felt, after having installed it, that I was able to handle the change on my own as it was explained well and gave enough details for me to feel confident. The lock and handle are sturdy and handsome, and the finish seems to be of fantastic quality.