The marble trap catches the first two marbles in the two openings. The third marble then rolls over the two trapped marbles and continues on its way along the track. The two trapped marbles can be released from the marble trap by either pressing them down with your finger or lifting them upwards. The two openings are now free again for the next marbles. Our modular and compatible marble runs are designed to stay put, so your kids can focus on the fun. They promote spatial intelligence and an understanding of fundamental physical concepts like acceleration and gravity. Wether with an instruction booklet or with free play, constructing a marble run stimulates working memory, and improves the capacity for analytical thought. And best of all, we’re building on an existing system to extend its life in the childrens room. All 15 parts and components of the marble trap accessory 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 trap is manufactured in Germany under the highest quality standards. - 100% compatible with building blocks from other manufacturers: All Hubelino products fit perfectly with the building blocks from other well-known manufacturers and thus optimally complement the existing stock of building blocks at home - Made in Germany for excellent product quality: All Hubelino products are manufactured exclusively in Germany to the highest quality standards - Playful learning with STEAM building sets: Hubelino’s products focus on a balanced relationship between play fun and learning effect. That’s why the development of new products always focuses on learning content and, through clever design, becomes a toy with added educational value