Have fun building incredible structures and vehicles withSmartMax! SmartMax allows children to explore magnetism safely. The oversizedpieces are specifically designed for handling by young kids as they learn aboutthe effects of magnetic attraction and repulsion, while older children willhave fun using the pieces to construct towers, bridges and other creations.They magnets are strong enough to carry up to 60 times their weight! The BasicStunt set is a great combination of SmartMax fun: building both structures andvehicles! Includes 46 pieces and a guide to build models! Extension sets areavailable separately