Easy installation: Screw fixing type, consist of hook and eye closure lock, easy to use, punching holes with screws and installing flip gate latch Lock at the position mark. can be used as a left or right hand application. Safety: The door lock latch is a safety measure for your family, preventing unwanted entry and keeping children and pets safely inside. Package List: 1X Barn Door Lock, 1X 2.5mm Back Plate, 8X Screws, 8X Expansion Tubes Heavy Duty Zinc Alloy Material: The fence gate latch is constructed from high-quality zinc alloy and has a multi-layer polished surface to eliminate any corrosion, rust and discoloration, ensuring durability and reliability. Night Light Mode Design: The 90 Degree Barn door lock has a luminous mode at night, you can clearly see the position of the door lock at night (it needs to absorb sunlight in a bright place during the day, and it will not emit light at night if it is installed in a dim place). 2.5mm Thick Door Latch Back Plate Included: The back plate is constructed from solid iron material; Thickness: 2.5mm; Length: 80mm; Width: 25mm; If the door and the frame/wall are not in the same plane, the sliding barn door locks can be installed by adding this back plate (for example, if the door gap 2.5mm, you can add one 2.5mm back plate; if 2.5mmthe door gap 5mm, you need add two 2.5mm back plates.) Multipurpose 90/180 Degree Sliding Barn Door Flip : The bolt cam locks can be mounted at 90 right angles, also can be mounted at 180 degree angles for even more space-saving use. Ideal for wood gates, metal gates, vinyl gate or post applications, use on family bedrooms,backyard, bathrooms,deck, sheds, baby gate, cabins, windows, cabinets, garages, kitchens, offices, privacy fence or chicken coop door, barn doors.