1. Hydraulic Buffer: The door opens smoothly without scratching the door surface. It is equipped with an automatic door closer, which can effectively prevent you from forgetting to close the door. 2. Adjustable Speed: You can adjust the closing speed at any time. It can also reduce the noise interference when the door closes and minimize the damage to the door caused by strong impacts. 3. Easy to Install: Using the included adjustment rod, you can insert it into the swing hole and adjust the required closing force. As shown in the figure, it comes with screws and brackets. 4. High Quality: The hydraulic door closer is made of high - quality aluminum alloy, which is strong, durable, rust - resistant and has a long service life. 5. Wide Application: This automatic door closer with a spring is suitable for most doors. The automatic door closer is applicable to metal doors, armored doors, wooden doors, etc. The door can be adjusted to open to the right. The automatic closing door is an ideal choice for household, office and hotel guest room doors. This indoor door closer is easy to install. During installation, simply insert it between the door frames and tighten it. The automatic door closer is easy to use. It can be installed on both left - and right - hinged doors. You can use the included adjustment rod to insert it into the pivot hole and adjust the closing force as needed to enhance the convenience of closing the door. 6. Product Name: Automatic Door Closer. 7. Applicable Door Weight: 10 - 60 kg. 8. Color: Black. 9. Product List: 1 * Door Closer Spring, Installation Screws