GraviTrax Action Pack: Balls & Spinner adds more movement, more launches and more racing possibilities to your GraviTrax marble run layouts. Designed for use with a GraviTrax Starter Set, this expansion introduces extra balls and a spinner starting stone that can send multiple balls into action at once.

• Adds extra balls to your GraviTrax system for busier, more exciting track designs.
• The spinner element can launch up to six balls, creating dynamic starts and unpredictable races.
• Encourages hands-on STEM play through gravity, momentum, planning and experimentation.
• Compatible with GraviTrax starter sets and other GraviTrax expansions.

A great add-on for young builders and GraviTrax fans who want to create more active, complex and replayable marble run challenges.

Help other Milsims Games users shop smarter by writing reviews for products you have purchased.