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. 1. Multifunctional automatic door closer, automatically close all doors. Very suitable for home use, light office use, shed, ranch, and home office! 2. , anti-, no rust, stable, wear-, weather-proof, hydraulics, quiet, safe shut-off device. 3. Quick Install: Hole-free adhesive installation, good firmness, does not damage the wall, easy installation, high-temperature resistance. 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., Weight: 373.8 pounds, Manufacturer: UDSKNV[KSL