Marble run with gears - all in one - Design, create and power your own a-"maze"-ing marble run with Techno Gears Marble Mania. This 215 piece set includes colorful channels, mills, funnel, pendulum, gears, motor, and much more, allowing children to design hundreds of different runs all while expanding their knowledge of mechanics and engineering. Once complete kids can watch their marbles drop, spin and swirl through their own creations. Techno Gears Marble Mania is pure fun for everyone and is compatible with all Techno gears products. Requires one "AA" battery. Recommended for ages five and up. Bilingual English and Spanish packaging.