GraviTrax Giant Pro Set
# RAVB27023
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A marble run and building set for boys and girls age 8 and up - over 10 million sold worldwide
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Includes 409 pieces, 2ft x 4ft building area, and instructions for 7 ready-to-build track layouts
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A perfect gift for imaginative kids who love to build
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Customize track layouts to power the marbles to the finish
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Build higher, 3-dimensional tracks with pillars, walls and balconies.
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Configure elements in unique ways to perform marble stunts