The King 2103 "3B" is a classic jazz trombone design. It features a .508" bore for excellent projection and open upper range with an 8" professional yellow brass bell that offers a quick response with a subtle brilliance. The chrome plated nickel silver inner handslide tubes provide the ideal surface for smooth and quick handslide action while the lightweight nickel outer handslide provides a light and quick response. The clear lacquer finish adds a subtle warmth overall. King small bore straight tenor trombones have set the standard in jazz for generations