Description: MATERIAL: The is automatic reset hinge is made of iron material, great process has good endurance, not easy to fade, anti-corrosion protection, high strength, very beautiful and practical EASY INSTALLATION: The lid hinge is used for side mounting and top mounting. Only mark two points for drilling holes, and screw each mounting accessory into its respective place CUSTOMIZABLE COMFORT: Effortlessly adjust the height of your sofa backrest to your desired position, enhancing the comfort and versatility of your DIY furniture creations LOAD CAPACITY: With our two adjustable angle hinges, enabling you to design and build furniture that meets various weight requirements WIDE APPLICATION: Suitable for woodworker to make their own furniture with these adjustable hinges you can adjust your sofa to simple bed, and can adjust recliner, couch, seat back, storage box lid or tatami`s angle. Or you can DIY for your own furniture Specification: Material:Iron Size Chart: 24.6cmx2.9cm/9.69inchx1.14inch Package Includes: 2xFurniture Hinges Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.