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34017 Mega MaboRun

Do it yourself assembly. 197 pieces to create a dynamic marble run. No batteries required. Ages 6 & Up.

Amazing MaboRun Mega & Combo Sets are interchangeable. You can build and customize your own MaboRun set. Each set comes with a combination of parts, steel balls and mechanisms to assemble a unique science toy with Do It Yourself construction and easy to follow instructions.