Now you can build and fly the world's fastest jet with the Estes SR-71 Blackbird flying model rocket. This scale model includes authentic looking Blackbird Skin, nose cone, jet inlets, exhaust ducts and decals to make it look like the real deal. The detailed instructions allow you to construct a flight-ready, realistic SR-71 jet that reaches 600 feet into the sky! SPECS: Length: 19 in.; Parachute Recovery; Die cut Balsa Fins Max. Altitude: 600 ft.