Let your imagination soar with K’nex Planes Trains and Automobiles 55 Model Set. Includes instructions/ideas for 55 unique models including cars, ships, creatures, robots, and more. With 400 K’NEX rods and connectors the possibilities are endless! Parts can be stored in the convenient plastic storage tub. Perfect for builders ages 7-12 years. Made in the U.S.A. Dimensions of storage box: Educational Benefits of K’nex Planes Trains and Automobiles 55 Model Set: develop ability to follow instructions encourage creativity and design your own vehicles develop hands on problem solving skills develop engineering skills develop fine motor skills develop spatial awareness