High-quality materials: Our barn door locks are made of high-quality aluminum alloy, which is moisture-proof and corrosion-resistant, and will not rust or fade, ensuring long-term and safe use. EASY TO USE: Our 90/180 degree barn door lock is designed to be flexible, it can be used at 90° and 180°, it can be freely rotated in a circle or kept vertical/horizontal without much effort. It will not open from the outside, preventing your family from entering, providing you with security and privacy. EASY TO INSTALL: Our security door lock can be fixed to wood or other flat surfaces, it is very easy to install, just use a screwdriver to screw in the mounting screws to fix it. The kit includes all the necessary hardware for quick installation. However, you need to pay attention to the distance of the rotation card. If the distance is incorrect, it will not work properly. Security and Privacy: You don't have to worry about your family members opening the door, others breaking in, and