Amazon.com: Master Magnetics COW-CP6X50BX New Ferrite Cow Magnet, 0.625" Diameter, 3" Length, Black (Pack of 50) : Industrial & Scientific
Cow Magnet ~ Heavy Duty
What are cow magnets - Zweber Family Farms
Cow Magnet ~ Heavy Duty
Master Magnetics 07238 Cow Magnet at Sutherlands
Cow Magnet, Alnico, 3.5" x .5" - Arbor Scientific
Amazon.com: Master Magnetics COW-RUM5CX3BX Cow Magnet, Ultimate Heavy Duty Ru-Master 5, Steel Ring and Ferrite, 0.75" Diameter, 3.375" Length, Black and Silver (Pack of 3) : Industrial & Scientific
Amazon.com: Master Magnetics COW-RUM5CX12 Cow Magnet, Ultimate Heavy Duty Ru-Master 5, Steel Ring and Ferrite, 0.75" Diameter, 3.375" Length, Black and Silver (Pack of 12) : Industrial & Scientific