Description: This pair items is made of high quality steel material, anti-rust and corrosion-resistant, durable and sturdy to use, not easy to bend. This thickness of them are 2.5mm and 4.0mm, they can load large capacity about 50kg. They also can be dissembled and easy to operate, according to your needs, they can be used to sit or rely on. Nice product at a good price, worth buying. Specification: Condition: 100% New Brand Color: Black (Shown as picture) Material: Heavy Duty Steel Load Capacity: Approx. 50kg / 100lb Angle Range: Approx. 125 degree Thickness: Approx. 2.5mm and 4.0mm Folded Size (L x W): Approx. 340 x 102mm / 13.4 x 4inch Bottom Size (L X H): Approx. 172 x 45mm / 6.8 x 1.8inch Raise-up Height: Approx. 242mm / 9.5inch Top Forward Length: Approx. 228mm / 9.0inch (All sizes shown as picture) Package Weight: 1.44kg Package Included: 2 x Hydraulic Hinges 【High Quality】This kind of coffee table lifting frame is made of heavy duty steel material, which is anti-rust and corrosion-resistant, durable and sturdy to use. Besides, it is not easy to bend and break. 【Large Load Capacity】With large load capacity, the folding lifting frame can load about 50kg/100lb, so they are used as a large lift up coffee table mechanism hardware fitting furniture hinges with springs. 【Function】This folding lift up works to change the function of tables. With the help of it, you have the ability to turn your normal coffee table into a functional coffee table. 【Practical】The top lifting frame can help you save much space that make you home more clean and tidy, which is perfect for your project. 【Easy Installation】The furniture hydraulic hinge is easy to assemble. Just attach the springs on the hinges. It is very simple to use.