Features standard 7/16 inch (11mm*22mm) stem and easy-rolling 2" (50mm) twin caster rubber wheels,Heavy-duty rubber caster wheels designed as direct replacement wheels for office chairs
Each rubber caster wheel can support up to 70 lbs. Set of 5 holds 350 lbs maximum
Easily Install --Simply pull out your current casters down and push in chair replacement wheels into the socket, then start enjoy your comfortable working time.
PU Plastic wheels protect hardwood, laminate, tile, slate, and all other hard floor surfaces,carpet without any marks and scratches.
Smooth and Quite Rolling-- Twin wheel design keep super quite and smooth rolling,no noise when rolling,won't disturb anyone while working.Eliminates the need for ugly expensive plastic floor mats.