A 2 Ring gag cheek piece introduces greater poll pressure as well as creating more leverage on the mouthpiece. Blue Steel 2 Ring French Link Gag Bit because it allows you to have control while staying soft. The gag action encourages a horse to lighten in the front without stiffing through the shoulder and back.    

• Our Blue Steel bits are made of a technologically advanced version of Black Steel (traditional Sweet Iron).
• Blue Steel oxidizes faster and easier compared to Black Steel.
• It will oxidize when in contact with air and humidity. This surface corrosion tastes sweet and naturally stimulates additional saliva production, encouraging better acceptance of the bit by the horse.

The bluing on mouth is made from sweet iron. Sweet Iron is designed to  oxidize when it comes into contact with moisture; this oxidation process encourages salivation which improves acceptance of the bit. This process changes the bluing  of the ERS horse bit .