1.These Polyurethane 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 higher surface with ease. Roll from hardwood floor to carpet with ease.

2.The caster wheels heavy duty rubber design supports up to 550KG , the strongest office chair wheels. Get these casters for office chairs and you don't have to be stuck to your office chair mat. These Wheels Surely won't leave marks or scratches on your beautiful floors.

Specification:

Two Types :universal  11*22mm

iKEA size   10*22mm   (the diameter is different from universal wheel )

Package include:

1 x pc office chair caster roller