1.Durable Material: The French Door Bolt Lock is made of solid aluminum alloy, oxidation process for fine protection, anti-corrosion, anti-embroidery, and long-term use without fading2.Easy to Install: Sliding bolt latch interior door safety locks can be installed vertically or horizontally. Flexible installation requires simply screwing the barrel bolt lock to a horizontal surface3.Wide Application: Safety door locks can prevent theft or prevent children from going out alone. They are a must-have for any home and are suitable for flat single-door doors such as bathrooms, bedrooms, offices, lockers, cabinets, etc.4.Reinforcement Locks Design: The knob adopts a simple and beautiful tooth design, and the smooth edges are not easy to hurt your hands. This simple door lock blends seamlessly into any home decor, making it both beautiful and functional5.NOTE: Please pay attention to measuring the installation distance when installing.