3-in-1 Automatic Self-Closing Design This heavy duty garage door hinge combines a spring hinge, door closer, and positioning hinge in one unit. It automatically closes doors smoothly while offering strong support and reliable performance. 90° Hold-Open Positioning The built-in positioning function allows the door to stay open at a 90-degree angle when needed, providing convenience for loading, ventilation, and hands-free access. Heavy Duty & Durable Construction Crafted from high-quality metal with an anti-rust finish, this hinge is designed to withstand frequent use and heavy doors in garages, cabinets, gates, and closets. Quiet & Smooth Operation The mute spring mechanism ensures smooth, controlled closing without slamming or noise, helping protect doors, frames, and fingers. Invisible & Space-Saving Installation The compact, concealed-style design keeps the hinge hidden for a clean appearance while maintaining strong load-bearing capacity. Wide Application Suitable for garage doors, kitchen cabinets, wooden doors, closets, shelves, and storage units. Ideal for home, office, and workshop use. Easy Installation Comes with mounting screws for quick and secure installation on wooden doors and panels.