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Ravensburger GraviTrax Obstacle Course Set - Marble Run and STEM Toy for Boys and Girls Age 8 and Up - 2019 Toy of The Year Finalist GraviTrax
GraviTrax Obstacle Starter Set Find your way around the marble run of your wildest imagination with the “GraviTrax Obstacle Starter-Set”! This set includes 153 pieces to help build your Marble run. INNOVATIVE The GraviTrax interactive track system allows you to design and build your own race tracks and experiment with gravity, magnetism, kinetics STEM TOY Boys and girls ages 8 and up can experience educational and science play. The franchise has sold over 15.5 million units worldwide and has ranked as the No.1 marble run

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Price: $103.98