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
Ideal® Rumen Magnets, Ringed Ferrite | Neogen
Cow Rumen Magnet for Dairy Farm
Silver Bullet Cattle Magnet 383690 | Heritage Animal Health
Sharpmag Ringed Rumen Magnet - 3 Pk by Sharpmag at Fleet Farm
Vetlexicon Bovis from Vetlexicon | Definitive Veterinary Intelligence
AlNiCo Cow Rumen Magnet, Standard Cast AlNiCo 5 Cow Magnets, Alnico 5 Cow Pill, Cow Alnico Magnet, Bar Cow Magnet, Alnico Steel Magnet, Alnico V Bullet Magnet- Buy Product on Hang Zhou
Bomgaars : Ideal Alnico V Rumen Magnet, 3-Pack : Magnets
Quick Draw, 4 Ring Magnet, Heavy Duty - Augusta Cooperative Farm Bureau, Inc.
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