Have amazing fun of building structures and vehicles with SmartMax. SmartMax allows children to safely explore magnetism. The oversized pieces are specifically designed for handling young children, while they learn about the effects of magnetic attraction and repulsion (Movie), the older children will have fun using the pieces to build towers, bridges and other creations. They magnets are strong enough to carry up to 60 times their weight. The set is a great combination of Basic Stunt SmartMax fun: both and structure construction vehicles. Includes 46 pieces and a guide to building models. Extension sets are available separately