The Sprenger Eggbutt Mullen Mouth 16 mm features a hard carbon mouthpiece with a smooth surface for consistent contact. Its straight bar design ensures constant and even pressure across the entire width of the tongue, promoting steady communication.

The fixed oval stainless steel rings provide direct pressure on the tongue and lower jaw, with gentle poll influence. This bit lies quietly in the mouth and is soft on the corners, offering a stable and comfortable feel.