General description Automatic Door Closer is a high-quality, lightweight door closer made from durable zinc alloy. It features a spring-operated mechanism that ensures fully automatic closing, providing convenience and safety for your home or office. This universal design is suitable for both left and right swing doors, making it ideal for various environments such as homes, offices, and hotel rooms. Technical specifications Material: Metal Color: Black + Silver Size: 12.8 x 16.8 x 3.5 cm Package Contents: 4 screws, 1 steel sheet, 1 wheel rod, 1 adjustment auxiliary rod, 1 body Measurement allowed error: +/- 1-3 cm Installation Includes all necessary components for installation: screws, steel sheet, wheel rod, and adjustment auxiliary rod. Usage Adjustable tension screws allow you to set the closing speed according to your preference, whether slow or fast. Designed for automatic closing to enhance safety and protect doors and locks.