Have fun building incredible structures with SmartMax! The new Start set includes 23 pieces and a guide to build models. Extension sets are available separately. SmartMax enables young children to explore magnetism safely, with strong, oversized pieces that are specifically designed for handling by young kids. SmartMax products are safe and durable, made from the highest quality materials. Our magnets are incredibly strong, able to carry up to 60 times their own weight! All parts can be combined with all existing SMARTMAX sets, creating an endless range of possibilities!