Korsteel Flexi Loose Ring Mullen Mouth Snaffle BitKorsteel Flexi Loose Ring Mullen Mouth Snaffle Bit Flexi bits are soft and much warmer to the touch than metal bits. A mobile bit which discourages fixing and leaning on the forehand. 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 Korsteel, visit the Korsteel Collection