The MB 33 is the mildest Myler mouthpiece in terms of tongue pressure.
The generously wide port allows room for the tongue to pass almost
completely under the bit. Because this mouthpiece does not rotate on to
the tongue and the port is wide, it applies little to no tongue
pressure, working primarily off the lips and bars.
The port on this mouthpiece is only 1 ½" high, so it will apply little
to no palate pressure. Because the MB 33 offers such a high degree of
tongue relief, the horse that goes well in this mouthpiece has a
trustworthy and consistent disposition, and is trained to work off the
leg and seat as well as the hands. Cyprium is a nickel-free copper alloy
suitable for horses with a sensitivity to nickel.
Notes: For a slight increase in tongue pressure, see the MB 43LP or
MB 43MP. For same tongue relief without Independent Side Movement, see
the MB 16 (Western only). For the same tongue relief and Independent
Side Movement, but with a slight degree of collapse, see the MB 05. For
more generous tongue relief, see the MB 16PB.
The 5" HBT shank is stainless steel and slightly curved back, with a
flat-top purchase and a rein ring. The mouthpiece has a fixed
attachment. The HBT shank has the patented Independent Swivel Cheek,
where the purchase, mouthpiece and shank all move independently of each
other. The purchase is slightly angled away from the cheek to avoid
rubbing. It has an indirect (curb) rein action designed to be used with a
curb strap which attaches to the purchase. The HBT shank uses the
combination of the fixed cheek and fixed rein to apply pressure to the
mouth, chin and poll.