The Dynamic bits have ergonomically formed mouthpieces which lie perfectly in the horse's mouth. Soft and even pressure is exerted on the entire tounge area, encouraging the horse to chew. The gentle joint in the middle which is angled forward- the characteristic feature of the KK Ultra- makes it a very friendly bit. The mouthpiece is made of Aurigan, the material that activates chewing, and the rings are made from Stainless Steel. This bit only comes in a 14mm width and the rings are 70mm across.