Product Details: The Power Products 1/4" Nylon Tubing Brass Union Tee is the perfect solution for quick and easy connections. Simply push in to connect and no tools are needed. It offers 60% better flow than standard compression fittings with inserts, making it ideal for tight-fit applications under the dash, behind instrument panels and in other confined areas. It is approved for most air brake applications with the exception of frame-to-axle installation. FleetPride is your First Click in Heavy Duty®.