Launch more marbles and increase racing options with the GraviTrax Balls & Spinner accessory. Race up to 6 marbles at once with the Balls & Spinner and send them down your marble run in a race to the finish. Open-ended and expandable, GraviTrax combines creative building with STEM-friendly play. Comes complete with 1 Spinner, 6 metal marbles and instructions.
Experienced Marble Runs
GraviTrax Accessory: Ball Box – Balls & Spinner Launcher Support
$7.50
Launch more marbles and increase racing options with the GraviTrax Balls & Spinner accessory. Race up to 6 marbles at once with the Balls & Spinner and send them down your marble run in a race to the finish. Open-ended and expandable, GraviTrax combines creative building with STEM-friendly play. Comes complete with 1 Spinner, 6 metal marbles and instructions.
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