Herm Sprenger Single Joint Pelham 16mm Short Shankoffers more control with strong and powerful horses enables precise and effective rein aids due to acting on tongue, poll and lower jaw curb chain should come into play at a maximum angle of 45 to limit the poll pressure the leverage effect on the poll can be varied by different rein options often used in combination with bit converters or with 2 reins use of a curb chain guard is recommended to protect the sensitive lower jaw bone Cheeks: 10cm