[with 5 Casters] The package includes a set of replacement computer chair bases, 5 chair wheels, installation Package
[Universal size] The office chair base diameter is 25 inches, with standard center hole (2 inch), universal caster socket size (11mm x 22mm). Applicable to almost all office chairs
[Durable metal] The material of this home office chair base is metal, which is durable and stable. Durable metal material provides a strong chair base. It can load up to 2500lbs.
[Perfect match] Perfect match with office chair, the same exact style base. it is the perfect replacement for office chair base
[Warranty] If there is any problem with the chair base, please contact us in time. We will provide free replacement