These door knobs are a great update to the old, gold builders grade knobs that had been on the place since it was built. They were fairly easy to install, once I figured out how to get the cover plate off so I could access the screws. From there, it only took about 10 minutes to remove the old knob and install the new one. I did 11 door knobs in less than 2 hours, by myself, and they look great!