89-13335 Myler Black Steel 7" Seven Shank with Sweet Iron Ported Barrel (MB 33, Level 3) Copper Inlay.
This mouthpiece is made of polished Sweet Iron which naturally oxidizes or rusts. Harmless to horses, it has a sweet taste and pomotes salivation. Black shank will discolor over time to an antique brown. Stainless steel dots.