GraviTrax Tunnels Expansion Set | STEM Toy for Kids Ages 8+ | Compatible with All GraviTrax Systems | No.1 Marble Run System in the U.S.

Experience surprising race results by sending your marbles through the "GraviTrax Tunnels"! Enhance the excitement with the "GraviTrax Tunnels Expansion" set, packed with 18 components including straight, curved, and vertical tunnels. These tunnels can hide marbles as they zoom through tracks or help them navigate sharp turns. Explore the Bernoulli track to test speed or drop marbles to a lower level using the cool o-tracks. Combine this set with any "GraviTrax Starter-Set" to enjoy gravity-powered educational fun today.

What makes a toy great? GraviTrax meets all the criteria! This creative, modular track system challenges children to use their imagination and build their own marble runs. The electronic-free construction sets use STEM concepts to promote critical thinking and problem-solving skills. Each GraviTrax set offers a variety of play options, keeping boredom at bay for hours of fun. Once you've mastered the basics, add expansion sets and accessories to create the marble run of your dreams.

Included in the set are 4 curved tunnels, 2 straight tunnels, 2 Y-junction tunnels, 2 card bases, 1 vertical U-turn, 2 drop o-tracks, 2 bowed Bernoulli tracks, and instructions. Designed for lasting durability, this toy is suitable for boys and girls aged 8 and up, providing endless learning opportunities and entertainment.

The innovative GraviTrax interactive track system allows you to design and build your own race tracks while experimenting with gravity, magnetism, and kinetics. This STEM toy is perfect for kids aged 8 and up, offering educational and scientific play. GraviTrax has sold over 15.5 million units globally and is the top-ranked marble run system in the U.S. All sets are compatible, making it easy to extend play time and create exciting tracks. Give the gift of GraviTrax to creative, curious kids and adults who enjoy building and exploring new challenges.

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