The Eggwin RZT 75G "The Brain" French horn mouthpiece is made from ABS-Like Resin and is designed with a medium-deep cup (around 17.5mm diameter), semi-flat rim, and a #2 throat for a balanced, rich tone that's versatile across classical repertoire—from lyrical solos to robust orchestral passages. It has an immediate warmth and projection without harshness, excellent high-register slotting, and forgiving response that aids intonation and endurance.