Quantity: including 4 self-locking hinges, when you are not using the desk or workbench, just press the latch and fold it down to get more space. 75mm*60mm*55mm/3*2.4*2.2 High-quality material: Made of high-quality metal materials, the surface is electroplated, which is not easy to rust, and the design makes it match your home style well. Easy to fold and self-locking: For added safety, these brackets have a spring-loaded forced lock that can be locked in the open position to ensure stability. Special design: With solid construction design, each bracket could hold 226kg capacity, be able to support heavy-duty furniture, 90°/0° adjustable. Multi-function: Suitable for folding table/chair, furniture legs, wooden folding bed, outdoor table, desk, DIY platform.