Material: Table Leg Hinge Cold rolled steel, nickel plating, corrosion protection, rust protection, abrasion resistance. Each bracket can hold 500 pounds capacity, works well and stably. Self-locking: Folding table leg has a spring-loaded quick-release latch that can be locked in the open position for added stability. When the desk or workbench is not in use, simply press the latch and fold it down for more space. Multiple uses: Suitable for folding wooden furniture table legs, large bed, iron bed, dining table, craft platform, table and other wide applications, can also be used as a simple invisible bracket.