These are great. I replaced old brass lever handles and my house looks so different. Easy install—the first one took me about 15 minutes (it was the first time I have ever changed a doorknob) but once I figured it out I had it down to like 3 minutes (I replaced about 9 knobs in total).  The trickiest part is pulling the knob off the cylinder so that you can maneuver a screwdriverdrill in to screw the whole thing into the door…but even that is as simple as sticking my fingernail into the slot and pushing while sliding the knob off.