【Rust-Resistant and Durable】 The automatic spring-loaded door closer is made of stainless steel and zinc alloy. The use of a one-piece molding process and electroplating makes the entire product durable, rust-free, and long-lasting. 【Reduces Door Closing Noise and Intensity】 This automatic door closer reduces the intensity of the closing sound to protect the door from damage. It also reduces noise interference when the door closes, with adjustable tension and screws for slow or fast closing, creating a quiet and comfortable environment. 【Adjustable Design】 Our internal door closer features an adjustable design. You can use the included adjustment rod to insert the rotating hole and adjust the closing force as needed to increase the convenience of closing the door. 【Easy to Install】 This spring-loaded door closer is easy to install; it can be fitted to both left- and right-handed doors. It features a threaded connection for convenient assembly and disassembly, ensuring durable and