Description This door chain lock is a security locking device for doors, allowing a door to be slightly opened to allow safe viewing and ventilation. Its strong and durable, sure to last, and installation is quick and easy. It can be used on a variety of door types and can be placed over or beside door casing. Features_ - Color: Silver. - Material: Stainless steel - Size: About Chain length: 195mm, door buckle: 127 * 32mm; 27 * 65mm - It secures your door shut while allowing a small gap for ventilation or viewing. - Security guard-easy to install and operate; Can not be unlocked from the outside, Unlocks easily from the inside - Offers reliable protection against Intruders. - Chain door guard constructed from stainless steel, ensuring quality and longevity. - This door chain lock can also be installed out of reach of children so they cannot open the door by themselves, providing additional child-safe door security. Packing list:1 x chain lock 4 x screws