Adjustable Furniture Hinge, Folding Sofa Bed, Lazy Angle Mechanism, 3 Position Support, Automatic Lock, 2 Pack Features: Brand new and high quality Functions: For sofa backrest and connection backrest, height adjustable sofa backrest Suitable for the connection of armrest and seat, backrest and seat, cushion and backrest, armrest and backrest, bed frame and bed. With the gear operation, you can adjust the angle of the handrail, side, cushion, seat and bed. Easy installation, with gear opening and closing position card design, multi-angle, multi-range. Material thickness: 2mm Product size: 260 x 85mm Package includes: 2 sets of sofa hinges;