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Heli-Roctor™ Competition Helicopter Model Rocket Kit (Semroc)
Competition-Style Helicopter Model Rocket Kit for 13mm Engines. Laser-cut balsa rotors and fins. Clever shroud assembly makes attaching the rotors fairly easy. Uses a drop fin can instead of a burn string to release the rotors. Nice performing model for the experienced builder.
Kit has been recently updated to use resin-printed nose cone with molded in attachments for the elastic bands.