XeloTech 5-piece set of hard floor casters for IKEA office chair - 10mm x 22mm stem - Very quiet office chair casters - No more floor protection mat - No scratches on the floor with these premium casters.

["[Important Note] - Please determine the correct stem size to the millimeter before purchase! This saves a lot of time. These casters have a 10mm x 22mm stem. The stem of your chair should be smaller or equal to 10mm, never larger. Not suitable for the IKEA model \"RENBERGET\". They do not fit NitroConcepts chairs.","[Safety for all hard floors] - Protect your floor with our gentle yet highly durable polyurethane casters for your office chair. Our gentle casters leave no dark or black streaks on the floor. Perfect for tiles, parquet, laminate, wood, marble, granite, stone, concrete, or vinyl flooring","[Silent, Smooth, Durable] - Glide completely noiselessly on your office chair. Even in the evening in the home office, no one will be disturbed by your work. Perfect for gamers who like to play at night.","[For office chairs with 10mm x 22mm stems] - Suitable for example in IKEA chairs, and some Topstar models also require 10mm casters. (Note: many Topstar office chairs have 10mm bore, but there are exceptions with Topstar, so please measure before purchase)","[Design] - These casters will enhance your office chair because they have a unique and very modern design. The casters are unbraked."]