Product Features: This is an amazing intellectual toy You can use it to design/build anything which you can think of with these magnetic spheres, like 2-D or 3-D objects and superstructures Can be used as an educational tool for children Also a good gift for friends
Product Specifications: Type: Magnetic Ball Material: Magnet Color Options: Black Age Range: > 14 years old Diameter: 10mm/18mm/20mm/25mm/30mm(each) Weight: about 580g
NOTE: Small part, not suitable for children under 14 years old!