High quality: The lid hinge is high quality zinc alloy with the highest corrosion resistance and can provide continuous support for many years. Adjustable: By turning the screw in the middle of the arm to adjust the correct friction pressure, it can be fully adjusted for different weights. Adjust different angles: Each hats holder can be adjusted to 75 ° to the maximum. The 90 ° adjustment angle and 110 ° depends on the installation position for a left-right installation. High quality mechanical characteristics: Slowly pull on the door to get a soft and quiet movement. If you need to close the movement smoothly, it is suitable for lids or shutters. Versatile: Used for cabinet doors, furniture or cabinets, reception counters, etc. Use: 1. First install the thick part of the gas spring on the door of the cabinet to bear. 2. Keep the cabinet door open 90 degrees to allow the air stem to extend freely. 3. Finally, connect the portion portion of the pneumatic rod to the cabinet door frame.