Introducing Tectran's D.O.T. Air Brake Fittings - Copper Tubing Union -Dependable Connections: Ensure airtight joints for a trustworthy brake system -Engineered Precision: Meticulously designed to optimize airflow, elevating brake performance -Effortless Union: Effortless installation and seamless compatibility with copper tubing -Built to Endure: Crafted from corrosion-resistant materials, ensuring prolonged strength Elevate your brake system's prowess uniquely with Tectran - where reliability meets excellence on the road.