12-17-2009, 09:46 AM
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The main idea of the mixed steel/copper mouth is that the two metals, connected by the horse's saliva, create a reaction producing a real tiny "charge" It is too weak to feel, but that charge produces a "flavor" that horses seem to like. This "flavor" helps the horse salivate.
I don't know what discipline you ride, but bits that mix these metals are illegal in dressage. You can have a mouth that is all copper, but no mouths where the two metals are inside the mouth together.
All that being said, as long as the copper pieces are level/flat on the bit, it will be fine. If you pull the bit back and forth at all, the lack of smoothness will be felt on the horse's bars, making it a bit more severe. The bit you show looks like a workable bit.