AeroTech 6120 Q-Jet Black Max Composite Model Rocket Motor - D16-4FJ 2 Pack (Ships USPS Ground) Pinewood Derby Redcat Racing BS903-019 87

Redcat Racing BS903-019 87

forms the background to it all

Removable knob included for adjusting boom position

SP-style snowplow pilot

AeroTech 6120 Q-Jet Black Max Composite Model Rocket Motor - D16-4FJ 2 Pack (Ships USPS Ground) Pinewood Derby Redcat Racing BS903-019 87AeroTech 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