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.