Prepare your semi to be Ready for the Road Ahead™, with the Grote Emergency 1/2" Glad Hand that provides a seamless coupling of the service and supply air lines. To quickly disconnect the air lines, this replacement coupling features an interlocking design that requires no specialized tools or advanced skills to uncouple. Fashioned with a durable design to tolerate extreme air pressure. FleetPride is your First Click in Heavy Duty®.