ETB430 intermediate trombone as a clear-cut choice for advancing players; it’s a professional-level horn and exceptional playability. Featuring a rotary valve and a closed wrap F attachment, this trombone adds clarity to your tone and promotes greater resonance, especially in the lower register. You’ll also benefit from alternate slide positions that help you maintain efficient technique, even as your music gets more difficult.And with the help of the ETB430’s free-blowing 0.547-inch bore and handspun 8.5-inch gold brass bell, you’ll experience improved endurance and projection right away!!!