[180 Degree Locking Hinge – Sturdy Construction] The 180-degree locking hinge is made of , thickened zinc alloy. It features solid sliding bearing steel balls and brass components for smooth, reliable operation. This folding hinge saves space and offers durable 90-degree self-locking and 180-degree adjustable positioning. [Adjustable Positioning – Multiple Angles] The hinge allows precise angle adjustment: 0°, 90°, 135°, and 180°, using the included screws. The torque-adjustable design ensures secure, stable positioning for flaps or doors. [Easy Installation & Wide Compatibility] Simple screw-on installation — compatible with folding tables, bifold doors, dining tables, workbenches, wooden beds, iron beds, DIY platforms, and other furniture applications. Screws are included for mounting. Note: Screws are included. Hinges do not include additional accessories beyond those listed. Dimensions: Approx. 6 cm in length Material: Zinc alloy Color: As shown Package Includes: 4 x hinges, 20 x screws Note: Color may vary slightly due to screen settings and lighting. Measurement tolerance: ±1–3 cm.