[High-quality materials] The door hinges are made of high-quality zinc alloy, have high torque, are not easily deformed and do not come off easily. They have resistance to strong and durable wear. [Humanized design]: Door hinges with high-speed rolling technology Maintenance-free plastic slide. Absolutely quiet and noiseless door hinges, open or close the door without squeaking, with the hinge you can attach a wide variety of components to each other stably and securely. < p>[Strong load-bearing capacity]: Capacity load up to 40 kg, suitable for doors weighing no more than 40 kg, the maximum door opening angle is 90 degrees, the stable structure ensures stability. in different environments. [Easy to use [Installation]: Door hinges can be completed in a few minutes. Adjust the size according to the actual hole spacing of the product, and then fix the door hinges with the screws provided. [Wide Application]: These door hinges are suitable for various indoor and outdoor constructions,