NOT for use in 2WD or 4WD short course trucks

BLX and Mega versions

Discharge Current: 50C

1S DC/DC Booster

Estes Rockets - Big Bertha Model Rocket Kit, Skill Level 1 Hardware & Fasteners Washers NOT for use in 2WDBig Bertha is an Estes original! She's an all around Estes favorite that has truly withstood the test of time. Over the decades, Big Bertha has been most modelers' first big build. If you've never flown a Bertha, get one and launch it. Once you've flown it, you'll take it to every launch! The Big Bertha gives you a slow, realistic liftoff. What a thrill it is to watch! Propelled by powerful standard Estes engines, this beauty travels to 500 feet and