Product Details: Equip your semi to be Ready for the Road Ahead™, with the Phillips Stow-A-Way® Single Plug 2-Glad Hand Holder, a crucial element that provides a seamless coupling of the service and supply air lines. Thanks to its interlocking design, this replacement coupling is able to quickly disconnect air lines, without requiring any specialized tools or advanced skills. Crafted with a durable body to endure extreme air pressure.