Check the listing for details. Pneumatic Gas Cylinder Lift Super Heavy Duty 500 lb fit office chair. Condition: New. Listed at 23.99 USD. Brand New High Quality Gas Lift Cylinderoffice chair seat height adjustment pneumatic gas lift cylinder complete with all parts ready to use Specifications LENGTH FULLY COMPRESSED: 11.5"LENGTH FULLY EXTENDED: 16.5"TRAVEL: 5" This gas cylinder is standard in the industry and should fit most chairs. The black color of the spindle is made of hardened steel that was heat treated, which turned the color to black.load capacity is 500 pounds. If you have any questions you may reach us via ebay message. We warrant all products to be free from defects in material or workmanship for two month from date of purchase.We fully guarantee customers an exchange or refund within 14 business days of receipt if item DOA (damage on arrival).Warranty excludes normal product lifetime wear-out, wear and tear or abuse.Warranty does not apply to conditions resulting from misuse, abuse, negligence, accident, improper application, improper installation or alteration. For malfunction products under warranty period, please contact our customer service via EBay Message.Only PayPal accepted.All orders delivered to Texas (TX) are charged the applicable sales tax.We only ship to paypal confirmed address.We will ship all orders asap. from Texas via USPS or UPS.( No service on Weekend and public holidays).Delivery time within the U.S. is usually just 3 to 5 business days, however in rare cases it could take 5 to 7 business days.No combined shipping discount offered and no pick-up service.Customer Satisfaction is always our Top Priority. If you feel any dissatisfaction, please contact us via ebay message.A Merchandise Authorization Number (RMA#) is required for all need areturned packages(After we have a fully communication). Please contact us to get an ""RMA"" number before you ship your items back to us. Items returned without an ""RMA"" number would be ignored or delayed in processing.All NON-Seller Mistake returns for refund are subject to 20% re-stocking fee and buyer should pay for the return shipping fee and handle fee.(For example,you brought wrong item or cancelled order after item was shipped).All return products should be in brand new state with all aaccessories included.Refunds will be given via paypal only. Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.