MBU-5/P oxygen mask- Used by the US Air Force for many years in tactical aircraft like the F-Century series aircraft, F-4 Phantom and F-15 Falcon. Our MBU-5/Ps are used excellent condition depending on the unit and complete with straight "T" bayonet clips, 3 pin connector at end of hose, and microphone. CX-4707 communications cord shown in photo is not included unless selected from the available communication cord options. If using mask with civilian impedance radios, please choose an amplified cord. Display Use Only.""