This mouthpiece is a correctional mouthpiece, a ported mouthpiece that collapses on to the outer lip and bars, and rotates on to the tongue. The pronounced corners of the port apply two points of pressure on the tongue for increased control.
Stainless Steel 5 1/2 MBT Shank with Sweet Iron Ported Barrel 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.