Sharon Camarillo Sweet Six O Ring Snaffle Bit The unique design of this bit offers direct control similar to a ring snaffle, while offering the additional control of curb pressure. It can serve as a training snaffle or as a transition bit. The mouthpiece stimulates saliva and is slightly more aggressive than a smooth snaffle. 3" Cheeks. 5 1/2" Mouth. Iron wrap O-ring mouth. Includes curb chain.