Great shank for transitioning from a ring snaffle and introducing curb pressure. Low leverage, but adds some curb pressure for more control. Packs easily with our most popular snaffle mouthpiece. Sweet iron naturally rusts into a light patina. The rust creates a sweet taste for the horse and makes the bit more acceptable and increases salivation for a supple mouth. Mullen relief is used on all our snaffle mouthpieces which is a forward curve that creates even pressure across the bars and tongue to eliminate the nutcracker effect.