This is a cow magnet. These are magnets that can be shot into a cows stomach with a gun thing like a gigantic pill. It sits in their stomach and if they eat a piece of metal it sticks instead of traveling through the cow and potentially killing them. Source: I went to middle school with this dirty Mexican kid who's uncle worked in a cattle kill line. He would steal them. The kid would sell them for .25c. I still have one of them somewhere.
Exactly what it is but I don't think projectile insertion is necessary unless on a large scale farm but seems extreme even then.
Thats what the kid said.
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