Sweet iron full cheek bit

Sweet iron/ Blue steel: 54% carbon, 46% manganèse. Sweet iron bits gets oxidized with air and humidity. Then comes a thin line of rust has a sweet taste, and stimulates the saliva. By getting more saliva the horse gets more contact on its bit. The oxydation process will change the color to grey / brown.

Full cheek bit: The most channelising bit, often used for young horses.