Korsteel Flexi Mullen Mouth Eggbutt Snaffle BitKorsteel Flexi Mullen Mouth Eggbutt Snaffle Bit Flexi bits are soft and much warmer to the touch than metal bits. The eggbutt snaffle has fixed, oval shaped rings offering a consistent contact. Ideal for younger horses or horses with a more sensitive mouth. The Mullen mouth creates even pressure on the bars of the mouth and the horse's tongue. To see more from JP Korsteel, visit the Korsteel Collection