Very good used 5″ Stainless Steel D Ring with Hooks with Stainless Steel Ported Barrel (MB 27PB, Level 3) Copper Inlay. Level 3 with a correction port that offers some tongue relief, with mild correction. Has inlayed copper to promote salivation. This is a discontinued model, as the newer version of this model has a smaller roller and straighter mouth piece. **please note-it has previously had a name etched into the side of the cheek, which has been buffed almost completely out, however is still slightly visible. Per Myler:
The MB 27PB is a Myler correctional mouthpiece, which is a ported mouthpiece that collapses on to the outer lip and bars, and rotates on to the tongue. The port, although narrow and somewhat low, allows room for the horse’s tongue to pass under the bit. When the reins are engaged and the mouthpiece rotates on to the tongue, it applies two concentrated points of pressure on the tongue for quick control. Because this port is only 1 ¼” high, it will apply little to no palate pressure
