Lotus Connect Store › Eisco Labs Horseshoe, U Magnet, Alnico, 1.5" x 1 1/8" Image 1 of 1 Eisco Labs Horseshoe, U Magnet, Alnico, 1.5" x 1 1/8" $9.85 Alnico MagnetHorseshoe, U Shape1.5" x 1 1/8"Perfect for science classroomStandard magnet for science education use. Compare magnet strengths between different shapes and materials. Quantity: Add To Cart Added! Alnico MagnetHorseshoe, U Shape1.5" x 1 1/8"Perfect for science classroomStandard magnet for science education use. Compare magnet strengths between different shapes and materials.