The port allows the horse to swallow and move his tongue when he is moving forward and relaxed, which acts as a release or reward. The mouthpiece is curved, and it wraps around the bars and lips instead of pinching.
The MB 03T is a Myler twist version of the traditional French link or lozenge mouthpiece commonly used in snaffle bits with an added copper roller. The barrel distributes the pressure more kindly and creates Independent Side Movement™.
The barrel in the center applies approximately the same pressure on the tongue as a traditional single-jointed mouthpiece. However, the barrel distributes the pressure more kindly and allows for each side of the bit to be used independently.
This cheek gets more popular every day. It helps to get your horse's legs underneath him and his rear end down. The short gag action collects a horse very well.
