The 2104 Horn has a 547 mm bore that gives you a light sound and consistent tone. In addition, this musical instrument has a rose brass bell with copper and zinc that gives a brighter sound. The inside of the tubing of this King Trombone is coated with nickel-silver, which provides smooth resistance against the inner chrome slide. This musical instrument also has a 6.5 AL mouthpiece that provides easiest tone production. With lacquer finish, this King Trombone is safe from tarnish. So create the same legendry music that defies time and space with the 2104 Horn.