John Hansen MaBoRun Amazing Stair Climber Toy
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.
Marble runs are a classic, entertaining way to explore mechanics, energy, and movement. MaBoRuns are desktop-sized, motorized runs that are easy to assemble and fun to watch. There are two sizes of runs available: the Amazing runs have the motor and gear system in full view and contain steel balls approximately 10mm in diameter while the Mini runs have the motor and gears hidden in the base and contain balls approximately 8mm in diameter. Amazing runs are also interchangeable. Each run requires a single AAA battery (not included). Some assembly required, colors may vary.