The Korsteel Sweet Iron Jointed Loose Ring Snaffle is a nice bit for horses with a fairly large tongue or small mouth, as it is not too thick in the bars. Made from Black iron and copper which slowly oxidises and rusts producing a sweet taste in the horses mouth encouraging salivation and a more relaxed jaw. Sweet iron is a good metal for horse bits, as it provides the horse with a taste. Ref: UTWB564