Sturdy and Durable: Made of heavy-duty metal with maximum corrosion resistance and durability, the spring-loaded barrel bolt lock is designed to provide easy additional security... Practical and Convenient: The flexible door barrel bolt lock with smooth locking action allows you to open and close the latch easily. The delicate rubber handle design makes it easy to pull and turn. Easy Installation: The spring-loaded bolt not only secures doors, but also aligns crooked doors. To hold doors open or closed, drill a retaining hole to match the diameter of the sliding pin to the correct position. Exquisite Details: The surface of this product is treated with blue zinc plating, the surface is smoother and more durable, and the anti-corrosion and anti-rust effect is better.