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SmartMax Magnetic Discovery Mega Ball Run VariesBy:Default Les organisateurs graphiques sont desBuild the ultimate ball track with this new SmartMax magnetic construction set that contains an amazing 74 pieces! With so many options you can build all kinds of structures and let the balls roll. Mega Ball Run contains special parts including tubes and X shaped bars with 4 magnetic ends. All parts can be combined with all existing SMARTMAX sets, creating an endless range of possibilities. SmartMax enables young children to explore magnetism safely,