Product specifications: Weight load: 4kg/1pc, recommended lid weight: 4-8kg (9~17lb) to achieve the expected lifting and cushioning effect. [Applicable size]: The hinges cannot be used if the lid is longer than 130cm and wider than 65cm. The inner depth is at least 23cm. If the lid does not meet the specified size and weight requirements, the hinge will not work. [STRONG LOAD CAPACITY]: The load capacity of the gas spring lid support hinge is 150N, can support the lid with a weight of up to 15kg if 2 pieces are used. [DURABLE ROLLED STEEL MATERIAL]: The gas spring hinge is made of high-quality cold-rolled steel, which perfectly prevents the surface of the hinge from corrosion or cracking due to air oxidation. The sturdy support material ensures stable support for a long time. [WIDE APPLICATION]: The gas spring lid hinge is very suitable for furniture, kitchen cabinets, wardrobes, wooden boxes or toy boxes. It can hold the door open at any angle when opening, and the lid closes slowly