ACOMPATIBLE Replacement Universal Office Chairs Gas Lift Cylinder – 9.6 to 12.8 inch Adjusts (Black)

This Replacement Gas Lift Cylinder fits 2 inch bases and 1.1 inch seat plates. If your chair is unable to adjust up and down then you may be in need of a new Gas Lift Cylinder. It is universal size is compatible with all office chairs sold in the USA/Canada. Outer cylinder is 2″ in diameter, and the inner cylinder is 1.1″ in diameter. Diameter is measured at the center of cylinder, not at the edge. Both cylinders’ edge are slightly tapered for ease of installation. Minimum length is 9.6″ and extendable to a maximum length of 12.8″. The adjustable range of 3.2″ in between will cover the height needed for most users.