Create a Marble Run Universe with the GraviTrax – Expansion Trax Set! Extend your GraviTrax® track set with this awesome expansion trax kit from Ravensburger®! With this set, you can take your run to a whole new level. Combine the vertical blocks, curves and tracks with your GraviTrax® Starter Set (sold separately) for even more action and suspense. How long can you keep them marbles going? Can you beat your own record? The GraviTrax® Marble Track System is an educational toy that aids in the learning of science, technology, engineering and mathematics, or ‘STEM‘. Contents: 16 large height tiles, 8 small height tiles, 7 curves, 1 junction, 1 long track, 2 medium tracks, 3 short tracks, 6 balls. Please Note: This Expansion Pack requires the GraviTrax® Starter Set (sold separately & subject to availability). Suitable for ages 8 to 99 years
