800G Pull: The premium steel cable has passed 50,000 pull and rebound tests with a strong 800G pull, providing strong tensile strength.APPLICABLE: Suitable for doors or doors requiring a stronger closing force. For example: left- and right-handed doors, wood and metal doors, residential and commercial doors, exterior/interior door closers, fire doors, etc. Please note: these door closers are not suitable for doors with carpets or where there is excessive friction.Punch-free: Automatic door closer that requires no drilling, easy to install and use. The adhesive installation requires no holes, is secure, and won't damage the wall. It's easy to install and resistant to high temperatures. The included hex key allows you to adjust the size of the metal loop and secure it.DURABLE: Anti-oxidation, anti-corrosion, stable, wear-resistant, weatherproof, hydraulic and safety locking device.Functionality:1. The adhesive is installed without holes, is firm and will not damage the wall, easy to install and resistant to high temperatures.2. This product is an anti-oxidation, anti-corrosion, rust-free, stable and wear-resistant, quiet and safe cutting device.3. The high-quality steel cable has passed 50,000 tensile and rebound tests and has a strong tensile strength.4. Small size, easy to carry and store, convenient to use and with good performance.5. Wide range of applications, can be used for corporate office doors, home doors, etc. Specification:Item type: Automatic door closer sensorMaterial: ABS, steel ropePurpose: Fixed to the door, automatically closes the door List of packages:2x closer