The Aeroquip QCAB-1800 Series 1/2" Brass Quick-Connect Air Brake Union is designed to meet the requirements of SAE J1131 and FMVSS 571.106 standards. It is suitable for use in a variety of applications including automotive, truck and trailer air brake systems. The union is designed to provide a secure and reliable connection between air brake lines and components, ensuring a safe and efficient operation. FleetPride is your First Click in Heavy Duty®.