【Adjustable Tension】: This automatic door closer has an adjustable design, you can freely adjust the closing force with the provided adjustment lever, thereby increasing the comfort and ease of operation when closing the door. 【Zinc Alloy + Stainless Steel】: The automatic door closer is made of high-quality zinc alloy and stainless steel, and the one-piece design plus the electroplating process makes the spring door closer rust-proof, corrosion-resistant and durable. 【Quiet Noise Reduction】: The automatic door closer uses nylon rollers, which are not only quiet during use, but also reduce the noise generated when closing the door, and the damage to the door caused by the violent impact when closing reduces the door. Also prevents you from forgetting to close the door. 【Size】: The size of the automatic door closer is about 125 x 34 x 34 mm, suitable for doors weighing 20-40 kg, the maximum door width is 1 m. The spring door closer is designed with left and right opening doors and can be used on the left or right, making it ideal for home use, hotels, offices and dormitories. 【Save time and energy】: Door closers reduce the force of closing the door, prevent damage to the doors, reduce the closing noise, and automatically close the door. You will no longer be afraid of forgetting to close the door.