These are a HUGE upgrade over the casters on my IKEA office chair. Most office chair casters are hot garbage, but the ones on my IKEA chair were especially bad. These are basically roller blade wheels. They roll so much better than the casters and don't scratch my floor when they get stuck and slide instead of roll. I use these on hardwood (actually vinyl plank, see my recommendation of that also), but I bet they would work on carpet without a plastic mat. Although most office chairs use the same standard, IKEA (of course) has to be different. So make sure you get the proper size for your chair. As far as I can tell that means IKEA and Not IKEA.