1. door closer, automatic adjustable door closer, light weight zinc alloy spring door closer. 2. High-quality-light door closers are made of metal, spring-operated, fully automatic closing, giving you a relaxed and safe life, protecting your doors and locks. 3Automatic door closers are not designed by hand with adjustable tension screws, which are used for slow or fast closing. Choose your return closing speed to suit the environment where the shutter is placed. 4. Universal design, left and right swing doors, very suitable for home, office, hotel room doors. 5. Give you a relaxed and safe life, protect your doors and locks. Description: Name: Automatic door closer colour: black+silver Material: Metal size: 12.8x16.8cmx3.5cm Package Contents: 16 x screws 4 x steel sheet 4 x wheel rod 4 x adjustment auxiliary rod 4 x body Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.