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Master Magnetics COW-CP6X4BX New Ferrite Cow Magnet, 0.625" Diameter, 3" Length, Black (Pack of 4) : Amazon.ca: Industrial & Scientific
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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) : Amazon.ca: Industrial & Scientific
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How Insert Rumen Magnet Into Dairy Cow | Hardware Disease | Cattle Management | Dairy Farm | Epi -04 - YouTube
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