401 LOOSE JAW COLTExcellent for leaving a ring snaffle and introducing a small amount of curb pressure. Young horses, as well as tender mouthed horses, will accept this mouthpiece well. Sweet iron is intended to rust and promotes salivation which makes a more supple feeling mouth. Mullen relief mouthpiece creates even pressure across the bars and tongue to eliminate the nutcracker effect. Brand: Reinsman Bit Style: Curb Bit Stage: Stage B (Transitional Switching