The Power Products Straight Male Connector Brass Fitting is the perfect solution for air brake applications. It features a cutoff and quick synchronization and is approved and marked by D.O.T. This fitting offers better flow than traditional compression fittings with inserts and is generally accepted for air brake applications, with the exception of installations from frame to axle and between towed and towing vehicles. It is perfect for applications that need to fit tightly behind the dash and is to be utilized with air brake tubing. FleetPride is your First Click in Heavy Duty®.