Security and Privacy: Swing door locks are security locking devices for swing doors, allowing people inside the room to open the door a few inches for identification or ventilation while providing privacy and security for guests and residents. This lock bar can also be installed out of reach of children so that they cannot open the door themselves, providing additional child safety. Durable Construction: This door chain guard is made of high-quality carbon steel with a polished finish and an 8-inch welded steel chain. It is strong and durable, sure to last, and installation is quick and easy. All installation hardware is included, and it can be used on a variety of door types above or next to the door frame. 【Wide Range of Use】It can be used for all doors. Perfect for restricting door openings and securing house doors in residences, homes, hotels, motels, hostels, etc. Easy Installation: Make sure your door frame is recessed. The security lock is attached with mounting screws. Simply use your drill to mount the padlock on the door, cabinet, or window. The process is very simple and almost any homeowner can do the job with ease. Package Includes: 1 x Door Chain, each hasp is equipped with 6 screws.