Prepare your air brakes to be Ready for the Road Ahead , with the push-in Power Products 1/2" x 1/4" NP68 Male Brass Connector that offers a leak-free hose coupling. To provide fast and responsive brakes, this replacement brass connector seamlessly transfers air throughout the brake lines of heavy duty trucks. Fashioned with a corrosion-resistant blend of copper and zinc, and a compact design for tight-fit applications. FleetPride is your First Click in Heavy Duty .