"WEIGH: LESS THAN ONE OUNCE;PUSH OR PULL CONNECT OR DISCONNECT; MAXIMUM WORKING PRESSURE: 100 PSI; SOCKET IS MADE OF BRASS NICKEL FINSH, STAINLESS STEEL SPRINGS AND BALL BEARINGS WITH PLUG MADE OF BRASS, BRIGHT DIP FINISH;DESIGN AS A PRESSURE TRANSMISSION COUPLING -FOR INSTRUMENTATION AND NOT AS A HIGH FLOW COUPLING;SOCKET HAS INTEGRAL CHECK VALVE WHICH STOPS FLOW WHEN UNCOUPLED"