89-64455 Myler MBB Black with Stainless Steel Dots Medium Shank with Sweet Iron Low Ported Barrel Narrow (MB 43MP, Level 2-3) Copper Inlay.
This mouthpiece is made of polished Sweet Iron which naturally oxidizes or rusts. Harmless to horses, it has a sweet taste and promotes salivation. Black shank will discolor over time to an antique brown. Stainless steel dots.