With this Realspace office chair wheels set for hard floors, you can roll your office chair back and forth without any hindrance. The wheels are suitable for the Realspace office chairs London, Tokyo, Dakar, and Florence. The diameter of the wheels is 60 mm. The pins used for mounting the wheels are 11 mm wide and 25 mm long. The package includes 5 wheels in black. If one wheel on your Realspace office chair is defective, it’s not a reason to immediately buy a new chair. Simply order a new set of wheels to ensure that all wheels on your chair wear evenly.