So, this is my second order of these knobs, so I haven’t installed this set yet, but the prior group was great. I did have to widen the circular cutouts of my existing doors, but the knobs I was replacing were from the 50’s. I gave 4 stars instead of 5 because the locking mechanism requires seating the two sides perfectly in order for it to engage. I had to screw/unscrew several times to line it all up correctly. Otherwise, looks great. It’s a quick and noticeable update to old doors.