The 246-piece XL Hubelino kit contains all the components you need for a huge marble run: 4 Gausscannons shoot the marbles through the tunnels or over daring ramps at breakneck speeds. With 84 run elements, the 12 steel marbles can travel a long distance, providing loads of continuous fun. 134 construction elements add lots of variation, height and stability. The two included square base plates can be used either as a great foundation for your construction project or as levels. And, with 10 tunnel adapters you can keep the fast-moving steel marbles in track. The Marble Run Set XL includes a manual with well-illustrated step-by-step instructions. All components of the Marble Run Set XL are compatible with common components from other manufacturers and can therefore be creatively combined with your existing building blocks and theme worlds. Like all products from Hubelino, the Marble Run Set XL is manufactured in Germany under the highest quality standards. For ages 8 and up. WARNING: CHOKING HAZARD -- Toy contains a marble. Not for children under 3 yrs. CHOKING HAZARD -- Small parts. Not for children under 3 yrs.