Estes Rockets - Super Big Bertha Model Rocket Kit, Pro Series II Replacement Parts Car and Truck Air Filters Color coded band to quickly

Color coded band to quickly distinguish size

1S DC/DC Booster

adjustable preload

75" (19mm)

Maximum power output is achieved thanks to near-minimum resistance measurements and a high-strength balanced rotor

Estes Rockets - Super Big Bertha Model Rocket Kit, Pro Series II Replacement Parts Car and Truck Air Filters Color coded band to quicklyMeet the Super Big Bertha, featuring a BT80 (2. 6 in 66 mm) diameter body tube for your building enjoyment. Standing over 36 inches tall, the Super Big Bertha comes with the quick release motor retention system just as the other Pro Series kits do. (9750 Motor Retainer Set is also sold separately). Construction of this kit is not difficult and the altitudes you will reach are very impressive! Building and finish work can easily be accomplished over a