Full cheek Blue Steel bitComposition: Blue Steel. The Blue Steel alloy of this Jump'In bit collection is 54% carbon and 46% manganese. Effect: this bit has a direct action on direction with no lever action. Blue Steel oxidizes when in contact of air and humidity creating a thin layer of rust which has a sweet taste that will naturally stimulate the production of saliva. By salivating more, horses will take the bit more. With this oxidizing process, the bit Colour will turn