The original cow magnet is a very powerful Alnico magnet which has a magnetic pole on each end. It is great for a number of uses, including the common use of finding studs in walls! It is a perfect magnet for a 3D demonstration of magnetic fields, similar to that produced by the earth. The cow magnet is stronger than bar magnets of equal size. Magnet Source - Made by Master Magnets.
Cow magnets are originally intended & widely used to help prevent "Hardware Disease" in livestock. "Hardware Disease" is caused when cows swallow nails, staples, & bailing wire while grazing. This can be fatal to the cow because the metals threaten the reticulum & surrounding vital organs of the cow. When properly administered, a cow magnet will collect the metals & bailing wire for the lifetime of the cow. Consult a veterinarian on how to administer the magnet to livestock. Careful! if the magnet is dropped on a hard surface, it may break!
Product Title Length Diameter Weight Model # Original Alnico Cow Magnet 3" 1/2" 0.15 lb.07239