The KNEX 350 Piece Building Set Tub is loaded with 350 parts to build anything you can imagine - cars, planes, boats, ferris wheels and more! Plus, building ideas for 20 different models are included to get you started. The sturdy storage tub makes clean-up easy and is a great place to store all your building parts or partially built models. And, the 350 PC Tub works with other building set brands, so there are even more building possibilities! For ages 7 and older.