This set is brand new and still sealed in original packaging.  Never been opened.

Definitely one of the best STEM toys ever!! Hours and hours of unlimited play come with this Xcellerator Marble Run from Hape Toys.  136 wooden pieces to configure in countless ways.  Learn about cause and effect, develop special abilities, enhance concentration, practice for logical and engineering thinking while having fun!  Assembly required.  

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• All Quadrilla sets feature high-quality solid wood and bamboo, and child-safe paints.
• All Quadrilla sets combine seamlessly with one another.
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 Assembly required.  Best for ages 4 years and older.