This model is in 1/700 scale. It is part of a new range in this shop of Space focused equipment. It does not require and work to finish this model. The missile is also sold as a seperate rocket available from this shop.
According to Wikipedia: "The Titan II was an intercontinental ballistic missile (ICBM) and space launcher developed by the Glenn L. Martin Company from the earlier Titan I missile. Titan II was originally used as an ICBM. It was later used as a medium-lift space launch vehicle to carry payloads for the United States Air Force (USAF), National Aeronautics and Space Administration (NASA) and National Oceanic and Atmospheric Administration (NOAA). These payloads include the USAF Defense Meteorological Satellite Program (DMSP), the NOAA weather satellites, and NASA's Gemini manned space capsules. The modified Titan II SLVs (Space Launch Vehicles) were launched from Vandenberg Air Force Base, California up until 2003."