Bring a wave of fun from the ocean to your living room with the new Typhoon Frenzy Roller Coaster Building Set from K'NEX! Build with over 640 K'NEX parts & pieces like rods, connectors and track, and add motorized power to send the silver coaster car twisting and turning through over 19 feet of swirling, non-stop action! Plus, download exclusive instructions to build an incredible second model, the Tsunami Surge Coaster! Requires 2 "AA" batteries. Includes 649 pieces. For Ages 9+.