The Jubobu Automatic Door Hinge is a durable and versatile self-closing spring hinge designed for smooth and controlled door movement. Measuring 4 inches in height and 2.5 inches in width, this stainless steel hinge is built to last, with a polished finish that adds a sleek look to any setting. It features a fully adjustable spring mechanism that allows you to control the closing force, ensuring that doors shut securely every time without slamming. The intelligent 90° positioning system uses steel ball bearings to hold the door in place when opened beyond 90°, preventing accidental swings and making it safe for children and everyday use.