5″ Myler Level 3 Flat Shank Medium Ported barrel curb, in very good condition. Sweet iron mouth. Flat Shank with Sweet Iron Wide 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 promotes salivation. Offers great tongue relief for your horse. Do note, the picture makes it look like it has rusted more than it has. It has only started to rust from its little bit of use. Per Myler:
The MB 33 is the mildest Myler mouthpiece in terms of tongue pressure. The generously wide port allows room for the tongue to pass almost completely under the bit. Because this mouthpiece does not rotate on to the tongue and the port is wide, it applies little to no tongue pressure, working primarily off the lips and bars. The port on this mouthpiece is only 1 ½” high, so it will apply little to no palate pressure. Because the MB 33 offers such a high degree of tongue relief, the horse that goes well in this mouthpiece has a trustworthy and consistent disposition, and is trained to work off the leg and seat as well as the hands. Sweet iron mouthpiece oxidizes and encourages salivation.