Durable and Sturdy: The self closing hinge is made of metal material, which is durable and long lasting. The appearance is beautiful and generous. Automatic Positioning Function: Adopts a self closing design. When the door is opened more than 90 degrees, the positioning beads inside the hinge will be automatically positioned on the card slot, allowing your door to be fixed in the open state. Spring Buffer: Built in buffer device ensures a slow and gentle door closing, preventing harsh impacts and noise. Concealed Design: The hinge is almost invisible after installation, providing a clean and aesthetically pleasing appearance to the door. Multifunctional Usage: Self closing hinge features a 4 inch large size, suitable for various door panels, whether heavy or light. Item Type: Self Closing Door Hinge Material: Metal Weight: Approx. 45g / 1.6oz Size: 10.2cm / 4in 1 x Self Closing Door Hinge 8 x Screws