Honestly have had no issues. They’re lightweight, so you don’t really have to factor them in to the total weight on the bar (unless you need to be absolutely precise). They’ve securely held 400+ with quite a bit of bar bend.
It’s pretty cheap quality, but you can’t really beat the price. I’ve used it mostly for dips. It’s a little awkward to get on and off, but it generally stays put and does the trick. Would recommend for sure.