Universal size office chair cylinder replacement parts Still worried about： Your old office chair cylinder quit working? The office chair is not enough to cope with your leg length ? The gas lift cylinder was shot, and kept sinking？ Can chair piston do a good job in supporting your weight（450lbs）？ You must consider our heavy duty gas lift cylinder replacement for office chair. It's a great replacement for gas lifts on office chairs, Ergonomic chair,Rolling stool,Gaming chair,Desk chair & rolling stool. Smooth rotation It easy to rotate 360° smoothly and silently.It can support higher weight than the original chair gas lift cylinder. No noise lifting No noise to colleagues even when turning or lying on a chair to rest Stable Using high-quality materials and 1.5mm thick outer steel,support up to 1000lbs How to make sure the gas lift cylinder fits your office chair? Check the outer and inner diameter of your broken gas lift cylinder. This gaming chair replacement parts fits the chair base with an outer diameter of 2"" Install the chair gas lift cylinder replacement on your own 1.Find a good size pipe wrench clamp tightly onto the top of the cylinder and remove the seat of the chair away from the gas lift 2.Use the rubber mallet to tap chair base edge，remove the chair base from the lift bottom 3.Remove the blue cap of the new cylinder. Insert the bottom of the cylinder into the center of the chair base. 4.put the seat of the chair on the gas lift. Adjustment height: 5.5" (100 mm) Fully Collapsed Length: 11.4" (290 mm) Fully Extended Length: 16.9'' (430 mm) Net wei