Encourage hands-on discovery and allow children to see how much weight they can pick up with this jumbo horseshoe-shaped magnet. These magnets will inspire children's interest in science and more, and are a great addition to any science lesson! Mighty Magnet measures 8" x 8". Can hold up to 4 lbs in weight. The Mighty Magnet is magnetically correct (1 ft. north and 1 ft. south). Ages: 3+.