Trust Sweet Iron Large Loose Ring Elliptical BitThe 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 turn will encourage a better acceptance of the bit. TRUST bits are anatomically shaped. The balance between shape, material and weight is constantly taken into account. TRUST bits