1/4" MNPT T style safety coupler has a push button for easy use. 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 coupler has a 1/4" basic flow size and a 3/8" FNPT air flow. Maximum of 36 SCFM.
Abbott Rubber Technical Data Sheet