Hanging cheeks help to encourage flexion, whilst the copper lozenge prevents the nutcracker effect of a single joint and encourages salivation. Mouthpiece thickness: 16mm. Cheek height: 110mm. This hanging cheeks from Shires help to encourage flexion, whilst the copper lozenge prevents the nutcracker effect of a single joint and encourages. The Shires Hanging Cheek Copper Lozenge Snaffle offers limited movement at the cheekpieces which makes this bit a good option for fussy horses, it also helps to prevent pinching and the bit slipping through the horses mouth. The copper lozenge prevent the nutcracker effect of a single joint and encourages salvation and softening of the mouth. Take a look at our range of Horse Bridles to pair with this bit. Buying Guide For more information about horse bits, take a look at our Bits Buying Guide. Size Guide Available in 4.5", 5", 5.5" or 6". Mouthpiece thickness: 16mm. Cheek height: 110m.