AUTOMATICALLY CLOSE ALL DOORS: Suitable for doors,or doors with a slightly stronger closing force. Doors that open left and right,wooden and metal doors,residential and commercialdoors,exterior/inner door closers,fire doors. Please Note: Door closer are not suitable for doors with carpet or too much friction. 50,000 TESTS & 800G Pull: The high-quality steel wire rope has passed 50,000 times of tensile test and rebound testwith strong 800G Pull, with strong tensile force. EASY TO USE: Punch-free Automatic Sensor Door Closer, Hole-free adhesive installation,good firmness,does not damage the wall,easy installation,high-temperature resistance. DURABLE: Anti-oxidation, anti-corrosion, stable, wear-resistant, weather-proof, hydraulics, safe shut-off device. MATERIAL: ABS plastic, 0.9 steel wire rope, can be equipped with various ports. , 1085 Perfect after-sales service: If you have any quality issues or do not like it after receiving it, please contact us and we provide free return and exchange services