You'll get 1 pcs of punch-free closer with wire rope, 2 pcs of adhesive hooks. installation methods ensure the stability of the door closer, do not damage the wall, easy installation. 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. Please Note: Door closers are not suitable for doors with carpet or too much friction. Punch-free Automatic Sensor Door Closer, the installation method is simple and easy to operate. The attached hexagon wrench can adjust the size of the wire buckle and fix it. Small copper tube design effectively avoid steel wire rolling up. Anti-oxidation, anti-corrosion, no rust, stable, wear-resistant, weather-proof, hydraulics, quiet, safe and reusable.