The Myler Level 2 MBL Short Shank Low Port Comfort Snaffle Bit is desighned with a stainless steel 5 1/2" MBL Short Shank with a sweet iron low port comfort snaffle (MB 04, Level 2) mouth with 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.