Durable steel materialThe folding hinge is made of steel, which is durable, wear-resistant and not easy to rust. The maximum load is 30 kg (66 lb) per pair. Self-locking hingeThe folding hinge can be self-locking, whether it is 90 degrees or 180 degrees open or closed. Release switchThe self-locking hinge comes with a release switch, when you need to adjust the board, just press and hold the switch. Easy to install The hinge has mounting screws, which can be easily fixed. Note: Before installation, the hand does not have a support position, these brackets are difficult to fold or release, so they can be folded normally after installation. Wide Application Perfect for wooden planks with width no more than 30cm, such as furniture table legs, wooden folding bed, workbench, dining table, DIY platform and others wide applications, it can also be used as a simple invisible bracket. Premium Material -Made of high strength cold rolled steel, with nickel plated surface, sturdy and durable, anti-rust and wear-resistant. Unlock switch - Comes with an unlock switch, when you need to adjust the map, just press the switch and hold it down. Easy to install -Equipped with screws, can be installed easily and conveniently. Specification n: Color: Silver Size: 180 degree tiled condition: 10.5 x 5.4 cm. Quantity delivered: 2 pieces