5.5" mouth.
Medium Cheek 7": "This rate & turn with medium cheeks will be the perfect bit for horses that are over-bendy or want to drop into their turns too soon. Use this bit to help rate and turn moderately aggressive horses, and the longer shanked version on the more aggressive ones. Great competition bit!" -Molly Powell
Long Cheek 8": "The rate & turn bit will help you gain rate and turn in a hard running horse. I use this bit on a stronger horse or while running advanced horses on the bigger patterns where I need to be able to rate them for a turn. This bit will help you to gain confidence in turns on a horse that has not been turning well. It's a pleasing bit that I use a lot on horses." -Molly Powell