The Q-Jet is the world's most advanced 18mm model rocket motor. They utilize a patent pending high-strength polymer case and bulkhead, ceramic nozzle and RCS's 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 propellant. They are not susceptible to thermal cycling like black powder motors. Q-Jets generate a highly-visible exhaust plume and delay smoke trail. All Q-Jets ship with a FirstFire Micro™ 2-lead igniter, which can be used with any launch controller.
Comes with 12 Q-Jet 18mm Motors 3 x A3-4, 3 x B4-4, 3 x C12-6 and 3 xx D16-6.