Recommendation: Our pneumatic lids work great on lids between 40-50 lbs. Heavy-duty gas strut support hinges are designed to support heavy trunk lids, toy box lids, heavy bench lids, etc. Excellent for smooth closing. Maximum weight supported: 22.7kg/2 pieces, pressure: 200N/44kg (per rung). Made of durable cold rolled steel in satin nickel. Note: At first glance, you may have received 2 right handed or 2 right handed, but what you need to do is remove the disc screw, turn it around and then reinstall it. Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days. 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