US Air Force U.S.A.F. Pilot Wing Insignia Pin Set Stylish insignia has a pin closure Nickel Plated, Mirror-Like Polished Finish Air Force, Aviation Pilot, Reg. size, MIL-DTL 3628_174 ** This item is manufactured by a U.S. factory certified by The Institute of Heraldry ** Can be pinned on shirts, pants, shoes, coats, sweaters, bags, hats, helmets, etc.