1/4" FNPT T style safety couplers are easy to use; simply push once to stop airflow, twice to release plug. Safety couplers prevent possible injury or damage due to accidental disconnects. OSHA required in certain areas and applications. T style safety couplers have a 1/4" basic flow size, air flow of 36 SCFM and a maximum pressure of 300 PSI.
Abbott Rubber Technical Data Sheet