These Cow magnets are made of ferrite magnets and steel items/plastic casing and will help the cow to avoid hardware disease! The cattle will usually eat some hardware parts when they eat the grass, like nails, iron items and this will seriously threaten the health of a cow so that the cow will lose their appetite and then their milk output will decrease and especially the hardware items may cause cow to die! So the cow magnets were made to solve the problem of cows. The usual dimensions for the products in above picture are D19X82mm & D35X100mm.

*Please Note: MJM Magnetics mainly produce custom-made cow magnets with high quality at competitive prices, so if you are interested in this kind of products and looking for a reliable supplier who can produce these products according to your special requirement, please Contact Us Now and we make sure we won't let you down if you could give us a chance to help!