Respirator Mask PTT Kit- Harris, Thales, Tri, PRC, Falcon Series, MBITR Series, (U229/U329 Connector)P N: PTR NX MIL: Harris(L3Harris) Falcon III Thales: RF 7800V, 5800, LVIS USA, AN PRC 113, AN PRC 119, AN PRC 150, AN PRC 152, AN PRC 154, AN PRC 117, AN PRC 119, Thales MBITR AN PRC 148 & other PRC ASIP SINCGARS Radios w U 229(5 Pin) & U 329(6 Pin) Audio Ports. PolTact Respirator Gas Mask Comms Connector. Compatible with SOTR, Avon C50, M50, FM53, FM54, O2 Tactical Respirator Mask TR2, & any respirator mask with a built in microphone using the J11 2