Adjustable furniture hinge, folding bed, lazy sofa joint, 3-position angle mechanism, bracket, automatic locking, 2 pieces Features: brand new and high quality Functions: for the sofa backrest and the backrest of the connection, adjustable height of the sofa backrest Suitable for connecting armrest and seat, backrest and seat, pillow and backrest, armrest and backrest, Bed frame and bed. Through the gear operation, change the handrail, side, pillow, seat and bed between angle adjustment, Easy installation, use of gear open and close position map design, multi-angle, multi-range. Material thickness: 2mm Package includes: 2 sets X sofa hinge