Mix up the marbles’ journey with the 7-piece Mixer expansion set. Send up to three marbles into the Mixer and see which sides they exit from. You can combine this accessory with any GraviTrax® Starter Set.
GraviTrax is a modular interactive track system where you can design and build your own marble runs. This STEM learning toy encourages experimenting with gravity, magnetism, and kinetics to propel your marble to the finish. Designed with open play in mind, the concept offers endless possibilities to design a different track every time you play.