7/16" Medium Hinge Port
6" Cheeks  5" Mouth
1-1/2" port height

Excellent balance.  Mouthpiece works best on horses with a medium to light mouth.  The tongue relief is very calming to horse that throws or shakes his head.  Packs very well.  Very  good feel to the rider or horse that like to run into the bit.  The unique swivel in the port adds a lot of side give and retains enough control for most horses.

No. 581-- 5" mouth