800G Pull: The premium steel wire rope has passed 50,000 times the tensile test and rebound test with a strong 800G pull, with strong tensile force. APPLICABLE: Suitable for doors or gates with stronger closing force. For example: left and right doors, wooden and metal doors, residential and commercial doors, exterior/interior door closers, fire doors, etc. Please note: Door closers are not suitable for doors with carpets or excessive friction. PUNCH-FREE: Punch-free automatic door closer, easy to install and use. The glue installation has no holes, is firm and does not damage the wall, is easy to install, and is resistant to high temperatures. The attached hex wrench can adjust the size of the metal buckle and fix it. DURABLE: Anti-oxidation, anti-corrosion, stable, wear-resistant, weather-resistant, hydraulic, and safety closing device. Feature: 1. The glue is installed without holes, is firm and will not damage the wall, easy to install, and high temperature resistance. 2. This product is an anti-oxidation, anti-corrosion, rust-free, stable and wear-resistant, quiet and safe cutting device. 3. The high-quality steel wire rope has passed 50,000 times of tensile and rebound tests and has a strong tensile force. 4. Small size, easy to carry and store, convenient to use, and with good performance. 5. Wide range of applications, can be used for company office doors, home doors, etc. Specification: Item Type: Automatic Door Closer Sensor Material: ABS, Steel Rope Purpose: Fixed on the door, automatically closes the door Package List: 2 x Closer