The MB 06 is a Myler alternative to the traditional mullen, but it has a
wide low port that allows the tongue to pass under it comfortably. The
port is ¾" high, just enough to allow the horse’s tongue to elevate
slightly and swallow, but not high enough for palate pressure. When the
reins are engaged, the 06 applies pressure primarily to the bars and
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.
The hooks make this a much more versatile version of the dee without
hooks. Attaching the headstall to the top hook holds the bit in the
correct position instead of allowing it to slide around the bridle cheek
pieces. Attaching the reins to the rein hooks allow the rider to lift
the cheek and use the Independent Side Movement™ of the mouthpiece.
Using the hooks does not add leverage but allows the rider to transition
from a direct rein action to indirect action without changing the bit.
Adding a curb strap (using a Myler curb strap kit) incorporates curb
pressure. Curb pressure is recommended for ported mouthpieces.