The X-15 was a rocket-powered research aircraft designed to investigate flight at hypersonic speeds. This 1/1175 scale plastic kit replicates the X-15 attached to a Boeing-52 as its "mothership", which was needed for transport. Features include a see-through canopy, optional wing-tip tanks, and a swiveling display stand. Assembly required, skill level 2. 12 ½" wingspan. 40 pieces.