Features: The door Closers have automatic Rebounds function, which can ensure that the door automatically rebounds after closing, avoiding safety hazards caused by the door not being fully closed. Make from steel materials, Light weight, strong and corrosion resistant, ensuring stability and durability. With the adjustment levers, you can freely adjust the closing force, which increases the comfort and ease of closing the door. Quiet Noises Reduction Technology The automatic door Closers not only reduces force required to close the door and protects the integrity of the door, but also greatly reduces noise. Suitable for most medium sized door, whether wood door, glass door or metal door that open right or left. Specifications: Materials: steel Base: Approx. 11.7cm/4.61inch Rod length: Approx. 12.8cm/5.04inch Package Includes: 1pc Automatic Door Closers note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.