What is a gullet on the saddle? ?

My friend is always talking about gullet sizes and I don't really know what a gullet is on a saddle...can you assistance?
ist the opening underneath the saddle, under the pommel
The saddle gullet is the cutout or tunnel underneath the fork and rides over the horse's withers. The design of the fork and the angle of the bars of the saddle tree determine the width and altitude of the gullet.


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http://www.hartcountyhorseclub.com/artic...


Ur welcome

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