AOMAG® 30 lbs Red Cast Horseshoe Heavy-Duty Alnico Power Magnets for Education: Amazon.com: Industrial & Scientific
Amazon.com: Red Cast Alnico 5 Bridge Magnet With Keeper, 1.77" Wide, 1.18" high, 1.18" Thick With 0.20" hole on top (Pack of 1) : Industrial & Scientific
Educational Long Alnico Bar Magnet Small with North South Identified for Students Teachers Science Education 2Pcs