Estes B4-2 Bagged Rocket Engines (3) Crawler Motor This ultimate trail truck gives

This ultimate trail truck gives you the perfect balance of style and performance

5mm Female Motor Connectors

Each package includes 2 engines

this steel spur gear allows you to fine-tune your Sledge's performance

4GHz with TSM

Estes B4-2 Bagged Rocket Engines (3) Crawler Motor This ultimate trail truck givesRocket Engine Overview: The Estes B4 2 Bagged Rocket Engines Flight Pack is an all in one pack designed to give you everything you need for three exciting rocket launches. Perfect for single stage rockets weighing up to four ounces, this trusted engine delivers consistent thrust with a five second delay for safe parachute deployment. About the B4 2 Rocket Engines Convenient Bundle for High Flying Fun Each pack includes enough supplies for three full