K’NEX Double Doom Roller Coaster Building Set – STEM-Compatible Construction Kit

Description

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 build 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+.

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