Go on a twisting and turning adventure with the Viper’s Venom Roller Coaster Building Set! Build with over 534 K’NEX pieces including rods, connectors, and track that build a model over 3 feet high! With the motorized action, your coaster car will go on a wild adventure through 18 feet of track. For more fun, download instructions for a 2nd coaster. Requires 2 “AA” batteries (not included). Rods and connectors Made in the USA. Ages 9+.