The Expert Blu mouthpiece has blue sweet iron on the arms of the bit stimulates the horse to mouth better and the lozenge that is made from a copper alloy is a warmer metal that helps the horse accept the bit. The double joint help relieve the nut cracker action giving less pressure on the lips, bars and corners of the tongue.
The bit has a universal cheek sometimes known as a 2.5 ring gag.
Good condition. Has some oxidisation but this is completely normal for a sweet iron but.