The MB 04 is similar to the MB 02 in that it will rotate on the tongue
and apply tongue pressure, however, it has a small (¼") port that
introduces some tongue relief to the horse. The port allows the horse to
swallow and move his tongue when he is moving forward and relaxed,
which acts as a release or reward. The mouthpiece is curved, and it
wraps around the bars and lips instead of pinching.
The dee with hooks is a stainless steel "D" shaped ring with fixed
attachment of the mouthpiece, as well as slots (“hooks”) at the top and
bottom of the ring for bridle and rein attachment. The small loop behind
the top slot accommodates a curb strap (attach with two curb hooks).
Both the top bridle slot and bottom rein slot on the standard and medium
dee will fit standard ⅝" bridle leather. The slots on the pony dee will
fit ¾" bridle leather.