Bests & Worsts Reviews from Amazon

I would rate these a five, but one of them failed on me (see photo). They're smooth and far superior to the garbage casters that come with most office chairs. I was using these on a chair mat, so don't understand the fail, but I guess anything that can happen, will, at some point. I'd recommend them, but right now, I can't sit in my chair because of them. EDIT: Wanted to edit my original review. I was contacted very quickly by the company and offered a full replacement set of casters, even though only one was defective. I am super impressed with the level of customer service I've received and I would, without hesitation, recommend these casters to anyone. My original 4-star review is now a 5-star.