Adjustable furniture hinge for folding bed, sofa joint, 3-position angle mechanism, bracket with automatic locking, includes 2 pieces Features: Brand Functions: Connects sofa backrest and allows 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 Enables angle adjustment between handrail, side, pillow, seat, and bed through gear operation Easy installation with gear-operated open and close design for multiple angles and ranges Material thickness: 2mm Package includes: 2 sets x sofa hinge Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DKPOP store