Build gear structures that you never thought possible with this 282-piece set! As the name suggests, construction in 3 dimensions is possible (you can even connect diagonally!) with 4 gears sizes, 6-way axles, chains, interlocking plates, pillars, connectors, and even universal joints which provide motion for distant gears. The kit comes complete with an educator’s guide explaining the theory of gears and a completely visual construction manual to get you on the right track. The possibilities are endless - in any direction!