Design isn't great, at least for my case. Case leans slightly, which doesn't look great. especially my case has a bulge in its design (like, to fit cords). It doesn't get very wide, so many cases will not fit.

Fine

Convient difficilement au bureau "sit and stand"

Its okay, feels kind of flimsy and has wiggle when attached. Not rated very high so watch out if you have a full tower PC.

Not the best, they are hard to adjust. Look elsewhere if you'd like to deploy these in bulk.

They're okay, need a lot of adjustment.