Circle Y Ported Mullen D & L Reiner Bit (836) - Attractive, well-balanced shank with excellent leverage coupled with a medium purchase for good response. Smaller diameter bar adds some bite. Port has enough height to allow tongue relief while maintaining enough pressure for correct headset. Are We Talking or Whispering? Stage D is about refinement, subtle cues, and quick communication. Characteristics include increased leverage, more sophisticated mouthpieces, and may also incorporate higher ports.