This bit is designed primarily for horses that have a tendency to drop their shoulder in turns. The longer shank offers the rider leverage in helping to elevate the shoulder and maintain a balanced position in the horse's body. Because it is a correctional bit, it should be used on a horse that is well into the shank bridle. The mouthpiece should be adjusted where it meets the corners of the horse's mouth and creates a slight wrinkle. This bit is exclusive to this store.