Automatic Sensor Door Closer Punch-free Automatic Sensor Door Closer: Multifunctional automatic door closer, that automatically closes all doors. Very suitable for home use, light office use, shed, ranch, and home office.Quick Install: Hole-free adhesive installation, good firmness, does not damage the wall, easy installation, high-temperature resistance. Type 7 inner hexagon is a tool to adjust the size of the wire buckleMute Door Closing? This product has been upgraded to add a silicone bumper, which can cushion and prevent your hands from getting stuck, so there is no need to worry about door handles and loud closing noise.Features: Anti-Oxidation, No Rust, Stable, Wear-Resistant, Weather-Proof, Hydraulic, Quiet, Safe Shut-Off Device.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 commercial doors, exterior/inner door closers, and fire doors.