Made from rare earth, neodymium magnets, Speks magnetic balls are possibly the most popular desk toy ever made. Speks are like magnetic putty, a stress ball and adult building blocks all in one. Mash them around for oddly satisfying stress relief or build a shape to unleash creativity. - 1000 Neodymium rare earth magnets - Steel building base - Plastic carrying case - Plastic divider and measurer - Speks Starter guide Keep away from ALL children