GraviTrax: Trax Extension

An expansion pack adds basic track components and six new balls to any GraviTrax starter set. New pieces change how far the marbles roll and open up fresh building possibilities. The extension works with all GraviTrax lines, including CORE, PRO, and POWER. A simple way to grow a marble run collection and experiment with new designs. Features: Basic track components included Six additional marbles Works with any GraviTrax starter set Combines with CORE, PRO, and POWER Ages 8 and up

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