With the fischertechnik construction kit Profi Dynamic XXL, you can build spectacular large-format marble runs. From 1365 components, three different courses up to 86 centimeters high can be built. The marbles race over a mechanical seesaw, through a loop-the-loop, over a quarter pipe, and overcome various obstacles. A powerful XS motor automatically transports the marbles back up via the chain lift. Mechanical switches and a stop point allow you to actively intervene in the course layout. This sophisticated construction kit can also be flexibly expanded.