Trust Sweet Iron Hackamore Combination Long French Link BitWe enjoy that the long shanks really give you a lot of leverage for the heaviest and strongest of horses. The Sweet Iron bits are made of steel and have a recognizable blue color. Sweet Iron will rust when it comes into contact with humidity, the surface rust tastes sweet and naturally stimulates the saliva production. The horse to salivating more will encourage a better acceptance of the bit. The process of rusting changes the blue color of the TRUST