Vevor Office Chair Base 28" Heavy Duty Replacement with Casters and Gas Cylinder NewUpgrade your chair with this heavy duty office chair base replacement from Vevor. The 28 inch five point base is built from hardened steel for stability and supports up to 2500 lbs static load capacity. It includes 5 smooth rolling casters and a grade 4 gas cylinder with 4 inches of height adjustment. Designed with a universal fit, it works with most office, gaming, and executive chairs. The black finish offers a clean look while resisting everyday