This K'nex Tub is loaded with 400 parts, including bricks, for lots of open-ended fun and endless building and play opportunities! It includes instructions and ideas for 20 models or use your imagination to dream up your own creations. The convenient storage tub means there is always a place to put your parts or take the fun with you wherever you go! K'NEX offers exceptional play value through building and bringing models to life. Knex toys inspire creativity, builds self-confidence and encourages interaction among children and parents. The possibilities are endless!  For ages 7+.