The K'nex Serpent Spiral Coaster set lets you build an awesome replica of today's "steel-style" roller coaster, and then bring it to life! Assemble the coaster track complete with twists, turns, and loops, pop the cars onto the track, and turn on the motor! Watch the cars and listen to the click, click, click, as they climb to the top of the lift, plunge screaming down the hill, then head back up for another thrill-packed ride. Up to five feet high, over a thousand pieces, infinite fun in a single blue box.
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