High Quality Material: Folding support hinge is made of zinc alloy, and the surface is chrome plated and polished, corrosion resistant, anti oxidation, and can be used for a long time. Unique Design: The door opening angle can be lift up to 75, 90, 110,you can adjust according your height so that you can touch the up overhead door easily. Adjustable Strength: The buffer hinges are fully adjustable for different weight by turning the screw in the middle of the arm to set up appropriate friction pressure so that the lid wont come crash down while closing. Easy to Install: Equipped with hexagonal wrench and screws, just use screws to fix the hinge from the base to the cabinet door cover, you don't need to worry about installation difficulties. Widely Used: The folding lid holding hinge can be used in cabinets, wardrobes, TV cabinets, bookcases, etc, also suitable for daily homes, offices, hotels, restaurants.