High-quality material: our latest automatic door closer is made of a high-quality ABS plastic shell, which is resistant to oxidation, corrosion, abrasion, weather influences, high temperatures and long service life. One piece offers 2 automatic door closures to meet your needs.1000 g super pulling force: the high-quality 1.2 m long steel wire rope has passed the tensile and elasticity test many times. The pulling force is strong and not easy to break. The 1000 g super pull force prevents panic by forgetting to close the door and gets a safer feeling time.Quick installation: the puncture-free automatic sensor door closer is installed with non-porous adhesive (installation and use, use after 24 hours, strong adhesion). After gluing the door closer, the viscosity is very strong and not easy to reach fall off, easy to install and strong high and do not damage the walls.【Function】Multifunctional automatic door closer that automatically closes all doors. Avoid repeated standing and opening of the door when learning and working, to improve learning and working efficiency, prevent mosquitoes and flies from entering the room, and prevent kitchen vapours from entering the living room.Wide range of applications: our door closers are suitable for most doors, e.g. doors with a slightly stronger closing force, left and right opening doors, wooden and metal doors, residential and business doors, exterior/interior doors and fire doors. Very suitable for families, small offices, hotels, dormitories, classrooms, businesses, sheds, classes and home offices.