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A DIY Marble Run Kit for Inventors ages 10 and older. Ingenious components offer unlimited possibilities. This is not a snap-together toy. Everything you need including plans for designing and building Slopes, Circles, Jumps, Loops and a Straight-away Race Track. Marbles included. Fully expandable. the Sky's the limit!
- A gift every middle school, high school and college Science & Engineer major will be glad you gave them. Grandparents, you will be glad too. Parents order one for your school! The basic kit is only the beginning.