Herm Sprenger Curved Mullen Mouth Pelham BitOffers more control with strong & powerful horses Enables precise and effective rein aids due to acting on the tongue, poll, and lower jaw The leverage effect on the poll can be varied by different rein options Often used in combination with bit converters or two reins Curb chain should come into play at a maximum angle of 45 degrees to limit poll pressure The use of a curb chain guard is encouraged to protect the sensitive lower jaw bone