These rubber replacement office chair wheels will relieve the stress of rolling on your office chair. Never get frustrated again. Let smooth gliding be the new normal! Just glide from lower to the higher surface with ease. Roll from hardwood floor to carpet with ease! These Wheels Surely won't leave marks or scratches on your beautiful floors! Our Chair Wheels Fit 95% of All the Office Chairs on the Market and Require No Tools to Install. Each caster wheels features a grip ring stem, which enables them to be attached to the base of an office chair without the use of any tools. If our wheels do not fit your chair, simply reach out to The MOPHOTO team and we'll take care of you.