Stainless Steel 3 3/4" Dee with 2 Hooks, with Stainless Steel Comfort Snaffle (MB 03) Copper Inlay Mouth. About the mouthpiece: the 03 mouthpiece is the Myler alternative to the traditional three-piece mouthpiece commonly used in sna?e bits. When the reins are engaged, the 03 will rotate fully on to the tongue in order to apply the necessary tongue pressure to teach a horse to give to the bit or break at the poll. The bars of the bit are curved so the bit wraps the bars and lips of the horse’s mouth instead of pinching them when it rotates on to the tongue. The curve makes more room for the horse’s tongue under the bit. The barrel in the center is the same width as the center piece on a traditional three-piece mouthpiece so applies approximately the same pressure on the tongue. However, the barrel distributes the pressure more kindly than the traditional centerpiece and also creates the Independent Side Movement . The 03 is identical to the 02 except for a copper roller on the center barrel which can comfort horses that are restless or nervous. For more tongue relief, step up to the 04. From The Level Best for Your Horse by Dale, Ron and Bob Myler. ⓒToklat Originals, Inc.