The Fish back Swivel Snaffle is personally designed by Chris it features weighted, engraved stainless steel D rings that will not pinch the corners of the mouth. The mouth piece has a ridge line on the back and is less progressive than a square bit. This mouthpiece is very unique having three sides and is ideal for picking up the shoulders and working on straightness. The mouthpiece is 5 1/4". **Note: This bit will rust when exposed to moisture and creates a sweet taste in the horse's mouth and promotes salivation.**