Prepare your air brakes to be Ready for the Road Ahead , with the Power Products 3/8" x 1/4" Male Hose Brass Connector that offers a leak-free hose coupling. By seamlessly transferring compressed air throughout the brake lines of heavy duty trucks, this replacement brass connector creates a system of fast and responsive brakes. Built with a compact design to accommodate tight spaces, and a blend of copper and zinc for superior corrosion resistance. FleetPride is your First Click in Heavy Duty .