2. Adjustable force: You can use a hexagonal screwdriver to adjust the closing force, which can reduce the closing force and prevent door damage. At the same time, you don’t have to worry about forgetting to close the door. 3. Silent design: The automatic door closer uses silent nylon rollers, which can open and close the door smoothly without jamming and reduce noise, giving you a comfortable environment. 4. Double spring design: The double-layer spring structure has higher strength and stronger elasticity, so the automatic door closer can withstand a maximum weight of 50 kg. 1. Excellent craftsmanship and materials: The automatic door closer is made of aluminum alloy through one-piece molding and electroplating processes. It is , -, flexible and has a long service life. 5. Widely applicable regardless of left and right: The automatic door closer does not require the direction of opening the door, and can be used in both left and right directions; it does not require the material of the door, and is suitable for metal doors, anti-theft doors, wooden doors, etc.; It is very suitable for homes, offices, hotels, garages, sheds, barns, ranch , garden doors, etc., Manufacturer: Aundhegrtt