Milton S-99706 - 1/4" MNPT M style push button safety coupler has a red push button for ease of identification. 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. M style safety coupler has a 1/4" basic flow size and air flow of 36 SCFM.
Abbott Rubber Technical Data Sheet