The dynamic bits have ergonomically formed mouthpieces which lie perfectly in the horse's mouth. Soft and even pressure is exerted on the entire tongue 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 the chewing activity of your horse. This bit only comes in a 16mm width and the cheek is stainless steel.