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K'NEX Double Doom coaster
Weight (approx.) 2000g
Two coaster cars equal double the trouble with the Double Doom Roller Coaster Building Set!
Build with classic K 'NEX rods, connectors, and track that build a model over 0.78m (3 feet) high.
With the motorized action, your 2 coaster cars will go on a twisting and turning ride. For even more fun, download instructions for a second model, the Wild Warp coaster. Models can be built one at a time.
Requires 2 "AA" batteries (not included).
891 Classic K'NEX pieces
Click here and enter set code 55402 to download all the instructions for this set.
Click on any link below for a larger image and more information: