AeroTech 6131 Q-Jet White Lightning Composite Model Rocket Motor - D20-6W 2 Pack (Ships USPS Ground) CK25 Walthers 933-4131 HO Scale Cross

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AeroTech 6131 Q-Jet White Lightning Composite Model Rocket Motor - D20-6W 2 Pack (Ships USPS Ground) CK25 Walthers 933-4131 HO Scale CrossAeroTech 6131 Q Jet White Lightning Composite Model Rocket Motor D20 6W 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 our exclusive Black Max or White Lightning aerospace grade composite propellant formulation, which produces nearly double the specific impulse (or "Isp", a propellant efficiency rating) of conventional