SmartMax Build & Learn features 44 building pieces and a new smaller case that is a sturdy storage unit - including pieces to build ball run sets. Both the lid and the bottom of the container each offer unique building grids to help you on your way to building original and colorful structures. Colorful building guides are also included. 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. SmartMax magnetic bars feature unique color codes: " Cold" -colored bars (blue, green, purple) attract " warm" colored bars (red, orange, yellow). Warm-colored bars repel other warm-colored bars, cold-colored bars repel other cold-colored bars. SmartMax products include complete, colorful guides with both product information and sample designs. All parts can be combined with all existing SMARTMAX® sets, creating an endless range of possibilities. Contents: 7 tubes, 2 long tubes, 7 tube connectors, 15 Small Smartmax bars, 12 Metal balls, 1 funnel, 1 concept book.