This desk toy is like a magnetic putty, without the mess. Whether your mashing or building pyramids, buckyballs, cubes and more, Speks are guaranteed to provide stress relief. They are the perfect fidget toy - even better than a fidget spinner! Each set of speks is made from 512 powerful rare earth magnets. Each tiny magnet ball measures 2.5mm and has a low flux rating making them ASTM and CPSC compliant. Speks are for anyone ages 14+.