Get your air brakes Ready for the Road Ahead™ with a leak-free hose coupling, with the push-in Power Products 3/8" x 1/4" NP68 Male Brass Connector. This replacement brass connector seamlessly transfers compressed air between brake lines in heavy duty trucks, leading to fast and responsive brakes. Engineered with a compact design for tight-fitting spaces, and a corrosion-resistant blend of zinc and copper. FleetPride is your First Click in Heavy Duty®.