Versatile self-locking hinge: You can use this 90 degree self-locking hinge for various DIY projects such as tables or beds, or to support workbenches or expand folding tables. It allows you to place them on the bed legs or on the table and change the height and angle as you like. Back to 0 degree folding state: this self-locking hinge can fold down to 0 degrees when not in use, making it perfect for places where space is limited. It has flexible applications for various furniture and projects. You can easily use it by gently pressing the spring-loaded opening button to unlock the 90 degree angle. Thickened Steel Plate: This 90 degree self-locking hinge can be used for various furniture such as tables, beds, shelves and cabinets. It has a foldable stand that allows you to save space and change the shape of your furniture. The riveted connections make it hard to scatter, and the thickened steel plate with galvanized coating makes it rustproof, durable and sturdy. Brilliant gift for DIY fans: these 90 degree folding self-locking hinges allow you to design your own table or shelf that can be folded away to save space. They are convenient to install and use, and they lock securely and stably in the open position. Surprise your loved ones with these hinges for Halloween, Christmas, birthdays or any other occasion. Space-saving and Secure: These self-locking 90 degree hinges are designed with a spring-loaded locking mechanism that locks automatically in the open position, providing additional security and stability. Just press the latch and fold it up to save more space.