K’NEX Double Doom Roller Coaster Building Set and Giveaway!
Nicoles Nickels
NOVEMBER 21, 2015
By 1992 this dabbling, followed by some innovative product engineering, led to the very popular rod & connector building system now known as K’NEX. As K’NEX grew, wheels, pulleys and gears were added so that kids could build vehicles, roller coasters and other innovative creations. Enter the Giveaway!
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