Multi-angle adjustment: the adjustable angle hinge is used in the connection between the headrest and backrest of the sofa, when sitting on the sofa, you can adjust the sofa pillows and backrest at different angles, adjust the angle of the headrest in multiple gears to enjoy different comfort Upgrade: Headrest hinges are upgraded to enhance quality; the return spring cover of the armrest adjuster body uses a one-piece molded metal cover to prevent accidental damage during transportation and installation 105-190 degrees adjustment: the headrest adjuster of the sofa adopts 15 degrees/stage structure, and the maximum angle is adjusted in 6 stages (the adjustment control range is 105-190 degrees) Installation: the headrest armrest wrinkle-free automatic rebound hinge comes with riveted corner code, the armrest adjuster adopts built-in/no cover type installation, the automatic rebound hinge is divided into left and right Strong tolerance: we insist on making high quality sofa headrest adjuster, the accessories are an important part of the whole sofa, so if you are going to buy sofa headrest adjuster, please choose our upgraded plate sofa hardware wave plate hinge Hidden hinge, Weight: 1.763698096 Pounds, Manufacturer: KAFENDA