The BRASS AIR BRAKE SLEEVE 1/4" is a robust fitting made from high-quality brass, specifically engineered for air brake systems. It is compatible with SAE J844 nylon tubing and meets DOT FVSS571.106 air brake specifications, ensuring safety and reliability in critical applications. This fitting is marked with DOT for compliance, making it ideal for use in various DOT-regulated environments. Its 1/4" tubing outer diameter ensures a secure connection, promoting optimal performance in air brake systems.