An innovative addition to the King marching line, the K50SP marching tuba produces sound and projection that is unmatched. In addition, the instrument is ergonomically balanced and boasts patented features that include the ability to see left through the tuba while in playing position. The addition of the 4th valve allows for increased fingering options to aid intonation. The removable valve section makes for easy cleaning and maintenance. Nickel plated pistons provide smooth, quick action and unmatched durability. Heavy duty wheeled marching case.