This pair items is made of fine quality steel material, anti-rust and -resistant, and sturdy to use, not easy to bend. They also can be dissembled and easy to operate, according to your needs, they can be used to sit or rely on. Made of heavy duty steel material, anti-rust and -resistant, practical and sturdy to use, not easy to bend and break.With this kind of lift you can turn your normal coffee table into a functional coffee table, they also can be used to change the function of other table.Using them can help you save much space that make you home more cleans and tidy, perfect for your project.Large load capacity, so they are used as a large lift up coffee table mechanism hardware.Easy to assemble, very simple to use.Specifications:Material: steelColor: blackBearing: 26kg / 15kg (optional)Package size: 360 * 130 * 60mm / 14.2 * 5.1 * 2.4inPackage weight: 26kg: 1352g / 3.0lb15kg: 1146g / 2.5lbPacking List: 1 * Pair of Lift Up Hinge Spring