May be used in preparation for the curb bit. Due to its shanks, it is regarded as a type of curb bit. It has elements of both a curb bit and a snaffle bit. Rather rare in a pelham, very rare in a curb bit. The Liverpool curb bit is most commonly used for carriage driving. Horses in most types of reining competition are required to perform in a curb bit. Liverpool bits are a type of curb bit commonly used for horses in harness. Because of the presence of a shank, they are actually in the curb bit family. A true snaffle does not have a shank like a pelham or curb bit. A curb bit works on several parts of a horse's head and mouth. The curb bit, or Weymouth, consists of a mouthpiece with shanks and a curb chain.