Good quality at very good prices overall for the entire range, it screws in well, tightly inside the box, the downside is that the square outer frame, no matter how much you tighten it, wobbles, not a lot but it's not stable and gives you the feeling that the socket will come out...

For their price, they are good. They seem to have a higher quality and sturdier construction than others I've had. They are a bit hard to press. I bought several (changed all the switches in an old house). One of them is giving me a little trouble, like it's not being pressed properly, maybe because inside the big button there are 2 small ones and one doesn't fully rotate. The other ones, about 10 of them, are excellent.