They are also very stable and dont slip i am using them on carpet

I havent used them long enough to tell if the screws come undone or loose but that wouldnt bother me anyway easy to tighten up and it doesnt pose a danger given how it all slots together

Some people might complain about the foam grips and i imagine they will flatten out a bit after a while but you could easily get some cheap bicycle grips and put those on instead