Cow magnets are primarily used to prevent hardware disease in cows. Hardware disease is caused by cows inadvertently eating metal like nails, staples and baling wire, and then the metal settles in the reticulum. The metal  can threaten the cow’s surrounding vital organs and cause irritation and inflammation in the stomach. The cow loses her appetite and decreases milk output (dairy cows) or her ability to gain weight (feeder stock). Cow magnets help prevent hardware disease by attracting stray metal from the folds and crevices of the rumen and reticulum. When properly administered, one cow magnet will last the cow’s lifetime. Cow magnet is an extra heavy duty magnet with five ceramic magnets strategically assembled with power-enhancing pole pieces for superior magnetic strength. Great for a number of uses, including the common use of finding studs in walls! A very strong & very durable magnet! The magnet does not disassemble. -Alnico cow magnets are composed of aluminum, nickel and cobalt, and they sometimes contain copper and/or titanium. -Ceramic cow magnets are composed of iron oxide and barium or strontium carbonate. -Cow magnets can also be used for 3D classroom experiments to demonstrate magnetic fields and a variety of investigations.