Every purchase helps support the global nonprofit National Geographic Society in its work to protect and illuminate our world through exploration, research, and education. Features a motorized lift that carries marbles up 19.5" and drops them onto the track, creating a perpetual motion machine that continuously takes your marbles back to the top to launch again! With 106 construction pieces, 30 marbles & the lift, you have everything needed for endless configurations! Get ready for hours of fun with this innovative motorized marble run from National Geographic! The motorized spiral lift carries your marbles up to 19.5" high and allows you to design endless runs. Configure the pieces in any design you’d like and explore endless marble maze possibilities! The motorized lift keeps the action moving, creating a perpetual motion machine that keeps the marble action going non-stop! The pieces in this kit--including the motorized lift--are compatible with existing National Geographic Glow-in-the-Dark Marble Run kits (non-magnetic), allowing you to explore even larger runs! The detailed Learning Guide has lots of information about the physics of motion and gravity, so kids can learn while they play! And when they’re all done, a convenient storage bag is included so you can keep all the marble run pieces stored together. We make the highest quality hands-on science toys, and all products are backed by exceptional service. With a mission to inspire people to care about the planet, the National Geographic Society is one of the world’s largest nonprofit scientific and educational organizations.