Estes 2220 Electron Beam Model Rocket Launch Controller Theme_Marvel Mechanical Components

Mechanical Components

sturdy construction

Molded in three colors plus clear window glazing

and even inverted (upside down) flight at the flip of a switch

which showcased bulging front and rear fenders

Estes 2220 Electron Beam Model Rocket Launch Controller Theme_Marvel Mechanical ComponentsEstes 2220 Electron Beam Model Rocket Launch Controller Get ready to launch your new rocket with the reliable Electron Beam Launch Controller. The Launch Controller comes fully assembled with 17 ft (5. 2 m) of cable and requires 4 new 1. 5V AA alkaline batteries sold separately. A GREAT Controller for launching all mini, standard (A C) and D powered rockets.