Centaur Professional D Barrel Mullen Mouth BitWe love the Centaur Professional D Barrel Mullen Mouth Bit because it contains all of the features a professional rider seeks. Curved Mouthpiece allows the horse to swallow freely, encouraging relaxation. The copper Inlay Mouthpiece encourages salivation. Independently Moving Sides allows the rider to engage one side of the bit without affecting the opposite side. **Due to the contagious nature of the equine disease EHV 1 and per biosecurity measure