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Roller Coaster Marble Run

# 39586
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    Product Specifications
    Get ready for fun with this easy-to-build marble run that’s over two feet tall!
    Let the races begin, with this amazing marble run roller coaster! It’s so simple to build: just press out the model pieces, assemble the marble run using glue or adhesive tape, and you’re ready to go. The track has a switcher and two funnels—plus a gravity-defying loop-the-loop, fun steps, and amazing slopes—so the winning marble will always be a surprise. The base of the book becomes a secure stand for your model, and you get easy-to-understand explanations of the physics and engineering involved.
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