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Estes C6-3 Model Rocket Engines$13.99
C6-3 Model Rocket Engines (3pk) The Estes C6-3 engine is a single stage engine designed for model rocket flight. This engine is a standard engine designed for flights in rockets weighing less than 4 ounces, including the engine. Each package includes 3 engines, 4 starters and 4 plugs.