Build anything you can imagine for a year with the 52 Model Building Set! Includes instructions/ideas for 52 unique models - 1 for each week of the year! Loaded with over 600 K''NEX rods and connectors you can build trains, planes, animals, and tall structures. Parts can be stored in the convenient plastic storage tub. Most models can be built one at a time. Perfect for builders ages 7+. Made in the U.S.A.