was a crappy old office chair. the wheel broke. ordered a new gaming office chair with reclining function. wanted to store the old one. So, I have 2 sets of wheels, 1 for new, 1 for old. gave away an old chair with new wheels with a new chair. So I ordered a 3rd set of wheels just in case and plan on keeping at least 1 spare set of these now that I know how good they are. They work so much better than the little crappy wheels that often come with office chairs, so I didn't even bother trying the little wheels on the new chairs before attaching them. If you're buying a new office chair, I recommend getting a set of these as well and using them instead.