The first combat operation of the UH-1 Helicopter was for the United States Army during the Vietnam War. The original designation of HU-1 led to the helicopter's nickname of Huey. Army Green UH-1 Huey Helicopter Cufflinks make a great men's dress accessory for pilots, Vietnam War veterans, those that love aviation or U.S. Army personnel. Approximately it will measure 1" x 3/8" in dimension. It is Rhodium plated base metal and enamel with bullet back closure. Gift boxed.