Accessory: Balls & Spinner
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Use your imagination to build superb tracks and set the Gravity Spheres rolling! With the spinner, up to six balls can be started at once. Watch as the marbles are sent on a race to the finish through the tracks!
Infinitely Expandable - All GraviTrax and GraviTrax PRO products are compatible creating endless possibilities for your tracks. You need a starter pack to use this set.
This Set includes: 6x Balls, 1x Spinner & Instructions