Mix up the marbles journey with the Mixer. Add some surprise to your tracks by sending up to three marbles into the Mixer and see which sides they exit from. Combine this accessory with any GraviTrax Starter Set.
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3 Comments.
The track is already so cool and then the marbles add another element of fun for any young scientist, or builder.
This adds an element of surprise, and can almost be played as a game between friends.
My son has the starter set, he would love to add this to his track
