They work great! Easy to install on the floor and table lamps

Doesn’t work at all for me. Unreliable functioning, and it raises the lightbulb too high.

We have a stack of 100-Watt bulbs that I wanted to use in our 60-Watt fixture but I was concerned about the heat. I installed this dimmer and turned it down to what I perceived as the light from a 60-Watt bulb. I ran it for several hours and touched the dimmer and it was not hot, so I will continue to use it in this service. I haven't used the rotary adjustment so I can not comment on its durability.

it broke the minute I screwed a bulb into it. extremely flimsy

Works perfectly.