AeroTech 6120 Q-Jet Black Max Composite Model Rocket Motor - D16-4FJ 2 Pack (Ships USPS Ground) Pinewood Derby Removable knob included for adjusting

Removable knob included for adjusting boom position

The screen is transflective which enables both indoor and outdoor visibility

forms the background to it all

This is a Reefs RC RedCat Gen8 Winch Bumper Mount

AeroTech 6120 Q-Jet Black Max Composite Model Rocket Motor - D16-4FJ 2 Pack (Ships USPS Ground) Pinewood Derby Removable knob included for adjustingAeroTech 6120 Q Jet Black Max Composite Model Rocket Motor D16 4FJ 2 Pack Ships USPS Ground The Q Jets are the world's most advanced 18mm model rocket motors. They utilize a patent pending high strength polymer case and bulkhead, ceramic nozzle and RCSs exclusive Black Max aerospace grade composite propellant formulation, which produces nearly double the specific impulse (or "Isp", a propellant efficiency rating) of conventional black powder