Geomag Magnetic Toys | Challenge Strike Recycled 185 pcsMade with recycled plastic, Mechanics Challenge Strike! 185 pcs harnesses the invisible forces of magnetism and gravity through original and surprising means. Challenge your friends to see who can load the gravity motor and knock down pegs! By loading the spheres in the motor, the force of gravity triggers the movemnet and rotation of the gravity motor, knocking down pegs! The more spheres you load, the faster you accelerate the gravity motor! The