This is for pasture fences. We got a young gelding (3 years old) and he acts like a 3 year old! Very friendly, rides well, changes leads easily, etc. However, he's been chewing on the fences and has taught the other two older horses, who ought to know better /w3tcompact/icons/wink.gif, to do the same. So while angle iron would work, it'd be on the expensive side for a 4 rail fence /w3tcompact/icons/smile.gif. Guess we'll try the No Chew.