It is made of stainless steel, made with care, strong and durable. Closed door buffer, speed can be adjusted, and the door closes automatically. It is equivalent to the three-in-one function of door closer, door stopper, hinge and function. There are 5 colors to choose from to meet your different needs. With complete accessories and easy installation, this door closer hinge is suitable for all doors., Manufacturer: Shun Yingtong