Automatic door closer is made of stainless steel and zinc alloy, using integrated molding process and multi-channel assembly process to ensure durability and strength. High-quality zinc alloy construction with non-handed design and adjustable tension. Features adjustable screws for controlling slow or fast closing speed, allowing customization based on installation environment. Dimensions: approximately 6.5 x 4.9 x 1.2 inches. Suitable for doors up to 60kg in weight and 1000mm in width. Universal design fits both right-hand and left-hand swing doors. Ideal for use on home, office, and hotel room doors. Includes mounting bolts and brackets as shown. This door closer helps reduce impact when closing, protecting doors from damage and minimizing noise. Please measure your door before ordering to ensure proper fit. Closing strength is adjustable using the included hex wrench, allowing for tighter or looser operation based on personal preference.