Hasegawa Model Kits - 1:72 F-4EJ Kai Phantom II KitThe F 4EJ Kai is an Air Self Defense Force fighter developed from the F 4EJ Phantom II. It was decided to adopt the F 4EJ as a successor to the F 86F in 1961, and deployment began in 1961. As more than 20 years have passed since its introduction, the F 4EJ was adopted in 1972 in order to extend the life of the aircraft and improve its capabilities. We have been conducting research and development since. As a result, in February 1981, a modification