The TRUCKPRO 3/8" hose ID x 1/4" thread air brake hose fitting with spring guard is precision-engineered to ensure a secure, leak-free connection in air brake systems. Its compact design enables compatibility with a variety of air brake setups, accommodating diverse needs. The included spring guard offers enhanced protection against abrasion and kinking and durability of the connection. With a 3/8" hose ID, it allows for sufficient airflow, promoting proper braking performance. Designed to support high-pressure environments, this fitting effectively maintains optimal braking performance.