Trust Sweet Iron Eggbutt Medium Port BitWe consider the Eggbutt to be the simplest and most common cheekpiece. The rings do not move up and down, resulting in a more stable position in the mouth and more direct rein aids. The Sweet Iron bits are made of steel and have a recognizable blue color. Sweet Iron will rust when it comes into contact with (air) humidity, the surface rust tastes sweet and naturally stimulates the saliva production. This will cause the horse to salivate more, which in