Aluminum office chair base Solid Die Cast Aluminum Chair Base Ideal for Executive And Swivel Chairs Satin Polished Leg Tops  Aluminum Office Chair Base   Will Never Rust Like Chrome Plating Steel

  

 Fits Most Standard Size Gas Lifts - 38mm Meets BIFMA Office Chair Testing for Quality Office Components

Specifications 

680 mm Outside Diameter 38 mm Center Hub OpeningUses Grip Neck Style Casters with 7/16" x .86" Long Stem