The GraviTrax PRO Vertical Expansion Set offers 33 additional elements to reach new heights with your track. Create dynamic marble runs with walls,...
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How many ways can you design a gumball machine? There's no limit here! Place the pieces in different configurations–turn the handle and see if your...
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Kick your creativity into gear! Easily connect 16 cogs and gears to create a mechanical display like you've never seen before. Six larger gears hav...
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A truly mesmerizing marble-track experience! Each set is made up of hollow stacking cubes and a variety of perfectly flat tracks. The paths cut out...
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Stack hollow cubes to magically propel stainless steel marbles down a track for a truly mesmerizing experience! Eighteen special tracks grow wider ...
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