All Heavy Duty Gas unit, from under the seat to the floor

Intensive use and heavy duty weight usage hardly describe the quality engineering and manufacturing found throughout these entire assemblies. Perfect for virtually any large person who has previously experienced failure of component parts due to heavy use or heavy weight in an office swivel chair.

Either kit assembly is complete as shown below, with nothing else to purchase. Shipping cost is reduced and ensures safe arrival by packaging into 2 cartons. No tools are needed for assembly, only the attachment to the chair bottom. Simply hand inserting the heavy duty cylinder into the mechanism and then into the base connects all three main component parts together. It doesn't get any easier than that!