GraviTrax - The popular marble run and STEM toy for kids ages 8 and up!
What You Get: GraviTrax PRO Vertical Starter Set comes with 153 pieces - everything you need to start building faster, higher, more action-packed marble runs.
Build Higher: Use the height tile towers, balconies, walls and high-speed tracks to take your tracks to new heights
Innovative: The GraviTrax interactive track system allows you to design and build your own race tracks and experiment with gravity, magnetism, and kinetics to propel your marbles to the finish
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