K'NEX Double Doom Roller Coaster Building Set

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Two coaster cars equal double the trouble with the Double Doom Roller Coaster Building Set! Build with 891 K'NEX pieces including classic rods classic connectors and track that bui ld a model over 3 feet high! With the motorized action your 2 coaster cars will go on a twisting and turning ride. For more fun download instructions for a 2nd coaster. Models can be built one at a time. Requires 2 AA batteries (not included). Rods and connectors Made in the USA. Ages 9+. Show more