Product specifications: Weight load: 4 kg (8.82 lb) / 1 piece. Recommended lid weight: 4 to 12 kg (9 ~ 26 lb) to achieve the expected lifting and cushioning effect. [APPLICABLE SIZE]: The hinges cannot be used if the lid has a length of more than 130 cm and a width of more than 65 cm. The internal depth is at least 23 cm. If the lid does not meet the specified size and weight requirements, the hinge will not work. [Strong bearing capacity]: The load capacity of the lid support hinge at gas spring is 150N, to support the lid with a weight of up to 15kg when 2 pieces are used. [Durable LED Wire Roller 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]: Gas spring lid hinge Gas spring is very suitable for furniture, kitchen cabinets, wardrobes, wooden boxes or toy boxes. It