Product Specifications:The package includes 4 screws, 1 adjustment rod, and 1 door protection pad, making installation easier. The door closer size is 9.8 cm x 2.5 cm, suitable for doors weighing between 30-60 kg, and can be used for both left and right-handed doors Material:The automatic spring bolt is made of high-quality zinc alloy. It features an integrated molding process and electroplating, ensuring the product is robust Easy Operation:Our lightweight spring door closer has an adjustable design, allowing you to use the included adjustment rod to insert it into the rotation hole and adjust the spring tension, enabling the door to close slowly or quickly Automatic Closure:The spring door closer automatically closes the door, preventing it from being left ajar for extended periods, improving security and privacy. The door closer operates quietly and minimizes noise when closing the door Application Range:The slow door closure reduces impact noise, providing a quieter environment, making it especially suitable for offices, apartments, hotels, residential buildings, commercial doors, interior and exterior rooms, fire doors, wooden doors, and metal doors, Weight: 0.8377565956 pounds, Manufacturer: Vogueing Tool