A-10 A US Army Air Force regulation pilot and aircrew flying oxygen mask, modified for use with british communications system. Size MEDIUM. Made by ACUSHNET. Stamped US ARMY AIR FORCE. Complete with T-44 microphone, cable and JK-26 jack with british style PL-179 plug. Mint condition, rubber is pliable. Flying helmet and goggles aren't included. Typical 8th or 9th Air Force equipment.