DURABLE FOR EXTENDED USE: Made of premium quality cold rolled steel and copper core with maximum corrosion resistance and durability, the gas spring lid stay hinges are made to provide constant support for years to come HUGE SUPPORT: Each pack of gas spring lid support hinge maximum bearing capacity: 80N:18lbs; 100N: 22.5lbs; 150N: 33lbs; 200N: 44lbs. If you use 2 packs of hinges together, bearing capacity will be double. Heavy duty gas strut will hold your lid open until you push it down. Gas strut can stay at place working. APPLICABLE DIMENSIONS: To ensure a reliable support, the maximum LID LENGTH is 130 cm, and the maximum LID WIDTH is 65 cm. Please make sure the INTERIOR DEPTH is at least 23 cm to accommodate the folding gas strut. Each pneumatic hydraulic lid stay hinge can be used for right or left hand mounting WIDE APPLICATION: Sturdy gas spring with a powerful lift for large heavy lid of toy box, treasure chest, cabinet, trunk, van, workbench, window seat, chicken hutch, dog house roof, shed, cold frame, hope chest, cooler box, blanket chest, flaps, tatamis and more storage chest bin project 100% CUSTOMER SERVICE: We pride ourselves on a 100% Customer Satisfaction promise. We are very strict with our product's design and quality. There are 30-day money-back guarantee. Please feel free to contact our customer support if you have any puzzles about our items, and we are always ready to provide our customers with 100 % satisfactory service, Weight: 1.212542441 Pounds, Manufacturer: Lokatall