The Power Products 5/8" x 1/2" Brass Swivel Elbow is designed for air brake applications with the exception of frame to axle installation and between towed and towing vehicles. The full flow design provides 60% better flow than standard compression fittings with inserts. Installation is quick and easy with no tools needed, simply push in to connect. This swivel elbow is the perfect choice for any tight fit application. FleetPride is your First Click in Heavy Duty®.