Estes 1601 B4-2 Model Rocket Engine Pack – 3 Engines with Starters & Plugs 5 Resistors 10M Ohms

Estes 1601 B4-2 Model Rocket Engine Pack – 3 Engines with Starters & Plugs 5 Resistors 10M OhmsPLEASE NOTE: These are 18mm diameter engines. Please refer to the instructions that came with your rocket (or the rocket's product description) to determine engine compatibility. Estes B4 2 engine pack includes 3 engines, 4 starters, and 4 starter plugs The B4 2 is a single stage engine designed for model rocket flights weighing less than 4 ounces, including the engine Recommended for use with the Interceptor, Der Red Max, Chiller, Big Bertha, or

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