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 pack includes one alnico bar magnet with North and South poles stamped. Each magnet measures 6"L x .50"W x .25"T. For ages 3+. Bundle includes 2 packs, for a total of 2 alnico bar magnets.