[High Quality materials]: The black door hinge is made of high-grade zinc alloy, which is thick, strong and anti-rust. Stainless steel hinge adopts rolling bearing, which is sensitive and durable. [Exquisite appearance]: The heavy metal texture of the alloy hinge can enhance the refined. This kind of round edge back flap hinge Streamlined design bring your furniture will become more stylish. [Scientific design]:The flexible bearing design with 180 degree flip hinge in the middle makes it safer to use, can withstand over 50,000 uses, fully meets your use for many years in the future. [Convenient installation]: We equip the screws for you and the screw hole sinking design allows the screw to be perfectly embedded without protruding, easy to install, safe and not hurting your hands. [Wide application]: Small 3 inch hinges suitable for many surfaces, such as computer desks, dining table, sewing machines table, windows, kitchen cabinets, doors and folding tables, cabinets, wardrobes, TV cabinets, bookcases, and other furniture accessories.