Horseshoe Magnet, 2" with N & S Indication, ALNICO 5 - ScienceKitStore.com
Amazon.com: ArtCreativity Horseshoe Magnet for Kids - 8 Inch Horse Shoe U-Shaped Magnet with Carry Handle - Fun Science Activity Toy, Great Gift Idea for Boys and Girls, Novelty Item for Adults -
Amazon.com: Dowling Magnets Classic Horseshoe Magnet, 6", red and Silver, Poles Marked, Includes Keeper : Home & Kitchen
Massive Red Horseshoe Magnet - Science & Education