The Conn 8HT Symphony trombone features a .547" bore that offers outstanding clarity and projection. The chrome plated nickel silver inner handslide tubes provide the ideal surface for smooth and quick handslide action. The thin rose brass material used in the professional bell produces a deep, warm resonant sound with a quick response. The clear lacquer finish adds a subtle warmth to the overall. The Conn 8HT professional trombone is ideal for both symphonic and solo performance.