1/2 Type B Blue Air Brake TubingThe 1 2 Type B Blue Air Brake Tubing is a DOT approved, reinforced nylon tubing designed for heavy duty air brake and pneumatic systems in commercial vehicles, trailers, buses, and industrial applications. Built to SAE J844 Type B standards, this tubing features a thicker wall construction for increased pressure resistance and durability. The blue color allows for easy identification in multi line air brake setups, improving maintenance and system