Perfect first two-stage rocket! Super-quick to build with high altitude performance - over 1600 feet! Pre-colored with two one-piece fin units, crazy-looking self-adhesive decals. 26.5 in. long,.98 in. diameter, Booster is tumble recovery, Main stage is streamer recovery, Plastic molded fins, Max. Altitude 1600 ft., Recommended Engines- Single Stage Flights A8-3, B4-4, B6-4, C6-5 - Two Stage Flights- Booster stage B6-0, C6-0 - Second stage A8-5, B6-6, C6-7