The possibilities of shapes and designs are endless with the SPEKS magnetic building set. Each of the 512 nickel balls contain a low-powered, rare-earth magnet. Builds a 1-inch solid cube. Perfect for the creative crafter. Ages 14+. Keep away from children. Magnetic flux index less than 30. Specify Black, Blue, Gold, Green, Pink or Red.

WARNING: Keep Away From All Children!
Do not put near or in nose or mouth. Swallowed magnets can pinch and stick together across intestines causing serious injury or death. Seek immediate medical attention if magnets are swallowed or ingested.