United Scientific Supplies MGTCOW-A Cow Magnet, Alnico, 1.25 cm Diameter: Amazon.com: Industrial & Scientific
Raw Alnico Magnet, 1 in.: Amazon.com: Industrial & Scientific
Pair of Alnico Bar Magnets with Keepers [2 x 0.5 x 0.25 in]: 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