Product specifications: Weight load: 4kg (8.82lb)/1pc. Recommended reference weight: 4~12kg (9~26lb) to achieve the desired lifting and cushioning effect. Applicable size: If the length of the lid exceeds 130cm and the width exceeds 65cm, the hinge cannot be used. The internal 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 lid support hinge spring gas has a force of 150N and can support a lid weighing up to 15kg when using 2 pieces. [Steel durable LED cord rollers]: The hinge on spring gas is made of rolled steel. High-quality cold sealing, which perfectly prevents the surface of the hinge from corroding or cracking due to air oxidation. Stable support material ensures stability. sustainable [Wide Application]: The hinged lid hinges spring gas heaters are ideal for furniture, kitchen cabinets, cupboards, wooden boxes or storage chests. Toys. It keeps the door open.