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UNIVERSAL SIZE】-The office chair base works perfectly with almost chairs in the market, the 2" (50mm) center hole to fit standard 2" diameter gas lift cylinder
【HEAVY DUTY】-28" heavy duty polished metal office chair base(not Aluminum), making the base more solid and safe, hold up 500 lbs
【UNIVERSAL CASTERS】- The diameter of 5 casters is 60 mm. The friction is small with noiseless function.
【EASY INSTALLATION】- It is extremely simple and convenient to install and operate as the picture
【After-sales 】-Warranty period is 1 year. Please email to us via Amazon when the chair base is bends, cracks, or breaks ,we will reply you and solution whithin 24h
Specification: Base size: 28"diameter base ideal for executive tilt/swivel style chairs 5 wheel casters in 60mm diameter Standard 2" centre hole to fit regular gas lift cylinder Standard 7/16" x 7/8" sockets to fit casters Finish: Black Painted polished Package Content: 1pcs *Base Replacement 1 pcs* Base Cap 5pcs* Casters