The Prelude TR710 Bb trumpet has a .459″ bore and a yellow brass bell that result in a quick response with a warm sound. The red brass leadpipe resists corrosion while the durable stainless steel piston material provides smooth and quick action. The 1st valve thumb saddle makes for easy intonation adjustments. The clear lacquer finish provides a subtle warmth to the overall sound. The Bach TR710 is high quality value-priced trumpet well suited for all musical settings.