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Sometimes simpler is better! Economical magnets in a basic bar shape feature an opposite pole on each end, creating an interesting arc-shaped magnetic field to explore. Ideal for activities that do not require a lot of lifting power. Learn all about magnetic polarity! A great demonstration and experimentation magnet! Each magnet measures 3″L x .50″W x .25″T. For ages 5+. Each pack includes 2 alnico bar magnets with North and South poles stamped. Sold as 2 packs for a total of 4 magnets. Recommended age 8+ years