This model is in 1/700 scale. Each aircraft is not armed, but has two external fuel tanks (One under each wing). The 12x Yak-28 Brewer aircraft are connected as a single sprue by two wires under the engines (one per engine). Once the wires are cut the model does not require finishing.
According to Wikipedia: "The Yakovlev Yak-28 was a swept wing, turbojet-powered combat aircraft used by the Soviet Union. Produced initially as a bomber, it was also manufactured in reconnaissance, electronic warfare, interceptor, and trainer versions, known by the NATO reporting names Brewer, Firebar, and Maestro respectively. Based on the Yak-129 prototype first flown on 5 March 1958, it began to enter service in 1960."