2. , anti-, no rust, stable, wear-, weather-proof, hydraulics, quiet, safe shut-off device. 4. 50,000 Tests: The high-quality steel wire rope has passed 50,000 times of tensile test and rebound test, with strong tensile force. 3. Quick Install: Hole-free adhesive installation, good firmness, does not damage the wall, easy installation, high-temperature resistance. 1. Multifunctional automatic door closer, automatically close all doors. Very suitable for home use, light use, shed, ranch, and home ! 5. 800G Pull: Suitable for doors, or doors with a slightly stronger closing force. Doors that open left and right, wooden and metal doors, residential and commercial doors, exterior/inner door closers, fire doors., Manufacturer: Aundhegrtt