Package contents: 1 door lock (length: 80 mm, width: 25 mm) and 4 screws (length: 28 mm). Perfect for bedrooms, bathrooms, changing rooms, fitting rooms, barns, garages, and more. Material: The 90/180-degree barn door lock is made of zinc alloy with a matte black finish that effectively isolates oxygen from the air and is strong and corrosion-resistant, ensuring its durability and reliability. Easy installation and maintenance: This barn door lock is designed for easy installation on either the left or right side of the door and at 90° or 180° angles. Align the lock with your door frame, mark the necessary holes, and secure it in place with the included screws for quick and easy installation. Security and convenience: Our door lock is designed for flexibility; it can be operated at both 90° and 180°. It can rotate freely in a circle or remain vertical/horizontal with minimal effort. Made of metal, it is so strong and secure that it cannot be opened from the outside, preventing break-ins and providing you with security and privacy. Wide application: This door lock is suitable for a variety of door types, including bedroom doors, balconies, garage doors, windows, barns, sliding doors, kitchen doors, bathroom doors, cabinet doors, and drawer doors. Additionally, it provides a reliable security measure for families and effectively ensures the safety of children and pets indoors.