Solarbotics Marble Machine

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Battery powered wood marble machine with a gear wheel and a spiral Easy assembly (no soldering required) Comes with 8 marbles (batteries are not included) Ages: 12+ The Solarbotics Marble Machine is now battery powered. This kit has splendid electromechanical appeal, delivering 8 steel balls down a laser-cut wood frame. Unlike its solar-powered cousin, it’s ready to run at your command. Show more