Gravitrax Jr Ocean Starter Set

Gravitrax Jr Ocean Starter Set The interactive ball track system from Ravensburger. With the GraviTrax® marble run system, you can build your own marble run world by creatively using the laws of gravity. Use the various building elements to create an action-packed course and use magnetism, kinetics, and gravity to get the marbles to the finish lineWith the GraviTrax® marble track system, you can guess gravity in a playful way, and with various expansions, it can be enlarged for unlimited building and playing fun! Add even more speed with the expansion sets.

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