Office Chair Base Replacement with Heavy Duty High-Grade Nylon, Industry Standar

★ Chair Base 2.0 - After listening to hundreds of our customers, we went back to the drawing board. We completely redesigned our base and changed the material. Our research and testing found that high-grade nylon is far more superior to the original cast aluminum version. This new version has more ability to flex during use to ensure it doesn’t crack or break. 
★ Universal Standard Size - This replacement chair base will fit almost every office chair on the market. If it doesn't fit your specific chair, simply return it for a full refund and we'll even cover the cost of shipping for you.  It has the standard 2" (50mm) center hole for gas lift cylinders and standard 7/16" x 7/8" (11mm x 22mm) sockets for chair caster stems. 
★ Strong & Sturdy Base - The office chair base is the foundation of every swivel chair, but it often gets overlooked.  The sturdiness and rigidity of your chair base has a direct effect on overall mobility and ergonomics of your office chair. The strength and durability of this chair support will ensure your chair's foundation is ergonomically sound for many years. 
★ Instructions Included - Don't know how to replace your computer chair base?  That's okay, it's actually a very straight forward task.  We've included step-by-step instructions and our customer support team can help guide you through the process.