Hardwood floor friendly
Your review: We just had our 130 yr old maple floors restored. Flooring company recommended rubber wheels for our desk chair. The stem is actually too narrow so I bought 7/16 O.D. steel tube, drilled out the holes in the base of chair to 13/32 and hammered them in.
The casters fit perfectly and we couldn't be happier with the outcome. We highly recommend them.