Child Safety always comes first with the number 1 best-selling child safety latch in the world. Designed for gates that are 48 inches tall or more, the high mounting position and top latch release knob are specifically designed to be out of reach of children. Powered by super strong permanent magnets, these latches incur no mechanical resistance to closure, offering unprecedented reliability. They are also key-lockable for added safety and security with a visual indicator to show locked/unlocked status. Meets pool safety codes so you know that your family's safety is assured. Made of polymer, you can rest easy knowing this quality product is rust and corrosion proof. Mounting hardware is included for easy installation. This latch is designed for use on metal, vinyl, or wood gates. Tested with over 2 million open & close cycles and backed by a limited lifetime warranty.