Good stability, high safety and explosion protections.Made of stainless steel and ABS, which offers outstanding impact resistant, the solid construction is designed to against corrosion, which is very durable. Suitable for general office chairs, bar chairs, computer chairs. Features -Color:Black -Material:Stainless steel, ABS -Size:39.00X5.00X5.00cm/15.33X1.97X1.97in -Note:The tube height of 120# is 22cm -Strengthened stainless steel lifting bar, smooth and silent lifting. Suitable for the most office chairs. -Heavy duty gas lift cylinder can support enormous weight, high center of chair support column. -The length of the chair cylinder can extended to suitable for most of your office chairs, with reliable performance. -Superior performance, exquisite workmanship, safe and reliable. Easy to install without additional screws. -This gas lift is suitable for most executive office chairs, work chairs, office chairs, rolling stools, drawing stools. Packing list1 x Gas Lift Cylinder When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!