Uncle Milton - Marvel Science - Iron Man Repulsor Ray Tech Lab Master the Repulsor Ray force, powered by Iron Man's Arc Reactor Try to control and balance the force in both handheld and tabletop positions Want a bigger challenge? Try moving the energy sphere through the included obstacles Features an educational poster about Iron Man and Real World science, like air power on Earth Includes Repulsor Ray unit, 2 Energy spheres, 3 obstacles and educational poster w/instructions