With the electronic Power Element Elevator, multiple balls can be transported simultaneously to higher levels of the Ravensburger marble run system. Gain height, achieve longer running times, and create new cool effects: the Power Element Elevator can transport several balls at once up to 7 height stones without manual reset. As soon as a ball reaches the elevator, the lift stairs automatically carry it to higher track levels. Combined with a starter set, the elevator opens up new track layouts, adds extra action, and increases variability. It allows for repeated height and more passes of the balls through the track. With GraviTrax, building fun knows no bounds. The GraviTrax marble run system can be infinitely expanded with extensions. By freely designing the marble tracks and exploring the rolling and flying behavior of the balls, understanding of science is sharpened, and gravity is made tangible. The STEM label on products indicates a category of play that makes science enjoyable. STEM (Science, Technology, Engineering, Mathematics) corresponds to the German MINT (Mathematics, Computer Science, Natural Sciences, Technology).