The full cheek snaffle has narrow arms which project above and below the rings, preventing the mouthpiece from sliding in the horses mouth and to emphasize the tuning aid. The twists in the wire cause pressure points across the horse's tongue and bars of the mouth, while the thin mouthpiece gives the rider a high level of control. The bit helps to prevent the horse from leaning and promotes a sharper response to the rein aids. The single joint applies a nut cracker action which applies pressure to the tongue, the bars of the mouth and the horse's palate.