Rev up creativity with iM.Master’s Pull Back Series – where classic play meets kinetic innovation! These building kits feature manual pull-back mechanisms that store energy as you drag models backward, then zoom forward with a burst of speed. Perfect for younger builders (ages 5+), kids can assemble vehicles like race cars, robots, or animals while learning basic physics principles like inertia, friction, and kinetic energy. With snap-together designs and smooth-rolling wheels, every model delivers instant gratification through battery-free motion. Ideal for sparking curiosity in mechanics, the Pull Back Series combines simple assembly with dynamic play, encouraging experimentation with gear ratios and aerodynamics. Build, pull, race – and watch STEM concepts come to life!