This mouthpiece is suitable for alto trombone. It features brass construction with a sturdy, stable design and exquisite craftsmanship. Designed for trombone mouthpieces, it is also used with trombone, baritone, and euphonium. Key benefits - Durable brass construction for long life and reliable performance - Exquisite craftsmanship delivers a consistent, stable feel - Specifically designed for trombone mouthpieces to ensure compatibility and proper response - Broad compatibility across alto trombone, trombone, baritone, and euphonium Use scenarios - Practice sessions with an alto trombone to maintain a steady, dependable feel - Live performances in ensembles that include trombone, baritone, or euphonium - Lessons or demonstrations to illustrate mouthpiece compatibility and performance Note: Keeps alignment with the original intent of a high-quality brass mouthpiece designed for trombone-related instruments.