Build your own high-speed hover train & track assembly, then watch the train as it propels forward via electro-magnetic forces! Includes over 150 pieces for a challenging build. DEFIES THE LAW OF GRAVITY! Each train car rides above the track as it travels, cushioned by invisible electro-magnetic power! Discover the magic of electro-magnetic theory with our levitating train kit, and develop a better understanding of the power behind positive and negative forces.