Stainless Steel Eggbutt with Stainless Steel with Sweet Iron Mullen Barrel (MB 32) Copper Inlay Mouth. About the mouthpiece: the 32 mouthpiece is a Myler version of the traditional mullen mouthpiece. The 32 is curved more than a traditional mullen so that it wraps the horse’s mouth, allowing more space for the tongue under the bit. The 32 also has Independent Side Movement which the traditional mullen usually lacks. Popular with riders who are more comfortable with a traditional design, but we recommend that you try the 32-3 to get the full benefit of Myler features. For a ported mullen style offering more tongue relief, see the 06 or 36. From The Level Best for Your Horse by Dale, Ron and Bob Myler. ©Toklat Originals, Inc.