Myler SS 5 HBT Shank Low Port Comfort Snaffle Stainless Steel 5" HBT Shank with Sweet Iron Low Port Comfort Snaffle (MB 04, Level 2) Copper Inlay Mouth 4 3/4". This mouthpiece is made of polished Sweet Iron which naturally oxidizes or rusts. Harmless to horses, it has a sweet taste and promotes salivation. Features: Stainless Steel 5" HBT Shank Low Port Comfort Snaffle Copper Inlay Mouth 4 3/4" Naturally oxidizes Promotes salivation Item Specification: Size: 4.75, 5, 5.5