Features Durable Material --- Reinforced iron lifting rod, smooth lifting and low noise. Strengthened protective shell, more durable. The spring is formed at 1 time, with superior sealing performance, safe and reliable. Heavy Duty --- Load bearing heavy duty gas lift cylinder can support most office chairs and computer chairs. Withstand higher weight and pressure, explosion proof, safe, wear proof and stable. Stable And Noise Free --- Stable use, no noise, silent adjustment, making the operation simple and smooth. No noise to colleagues even when turning or lying on a chair to rest. Easy To Install --- Office chair gas lift cylinder replacement can be installed easily with no additional screws required. Simple operation. Widely Used --- This office chair cylinder replacement is suitable for almost all office chairs, such as salon chairs, work chairs, rolling stools. Specification: Item Type: Chair Cylinder Replacement Material: Iron Package List:1 x Chair Cylinder Replacement Package List 1 x Chair Cylinder Replacement