Upgrade Your Office Chair with a Heavy-Duty Hydraulic Gas Lift Cylinder Restore your office chair’s height adjustment and stability with this premium Class 4 gas lift cylinder. Designed for universal compatibility, this hydraulic pneumatic shock fits most office, executive, gaming, and task chairs. Built for Strength & Safety Constructed from heavy-duty steel with an explosion-proof design, this gas lift supports up to 450 lbs while providing smooth and reliable height adjustments. Universal Fit Standard 2-inch outer tube and 28mm shaft ensure compatibility with most major chair brands. Quick & Easy Installation Replace your old cylinder in minutes without special tools. Simply remove the worn-out lift and insert the new one. Product Features: Class 4 heavy-duty rating 4–5 inch adjustable height range Steel construction for durability Universal fit design Smooth and stable lifting mechanism Perfect for home offices, corporate workspaces, gaming setups, and conference rooms.