The Power Products 5/8" Nylon Push-On Union Tee is the perfect solution for tight-fit applications under the dash. This union tee is designed to be pushed in to connect quickly without any tools. It offers 60% better flow than standard compression fittings with inserts and is approved for most air brake applications except the frame-to-axle installation. This union tee is the perfect choice for any tight-fit application. FleetPride is your First Click in Heavy Duty®.