Features:  100% Brand New.  Description: Big cage, furniture hardware accessories  Function: lifting support  Uses: drawing tables, student desk, sofa armrest, massage, medical settings, etc.  Installed on the massage bed, beauty bed and other furniture headrest through the operation of the gear, change the angle between the armrest, the edge, the pillow, the seat and the bed surface, the installation is hidden and safe, using the gear to open the card position design, multi-angle, multiple gears.    Material: Iron  Bearing capacity: 70kg - 80kg  Size: approx. 331*250mm/13.03*9.84inch  Color: Colored zinc  Uses: massage bed, medical bed, drawing table, desk table angle adjustment, rib bed, sofa bed.  Application: suitable for medical bed, massage bed, double bed backrest adjustment, school drawing table, multimedia desk and other desktop angle adjustment.    Tips:  It is recommended to install 2 pieces on each board to avoid shaking when using.    Package list:  1pc x Lifting Hinge    Installation Screws    Note:  1.Please allow 1-10mm error due to manual measurement.  2.The color may have different as the difference display, pls understand.