Connect and build with these toddler-sized magnetic bars and balls! This is open-ended construction play at its finest. Start them young with the fascination of magnet connecting! String the bars and balls together, learn to build 2D and 3D shapes. It can be as simple or as complicated as your child is ready for! The extra-large parts are the perfect size for a toddler's grip--but way too big for their mouths! There's absolutely no danger that they'll swallow anything! Plus, the parts are not only glued together, they are ultrasonic welded, so there's no way they're impossible to take apart! Let your kids figure out the intuitive connections of this building set. Long bars use stronger magnets than smaller bars. Warm and cool colored bars attract, but like-colored bars repel! Open-ended building sets give your child's creativity room to bloom! Durable and strong construction. 30 piece set includes: 8 metal balls, 4 curved bars, 12 medium bars, 6 long bars.