This full size tuba has 4 top action stainless steel piston valves. With a 17.75" bell and larger .770 bore, this horn fits most high school band requirements. A larger .795 bore at the 4th valve makes playing the low notes with a deep resonant sound easy. A rose brass lead pipe and stainless steel pistons give long life. Every Vento tuba is hand buffed and coated in a protective clear lacquer. Includes a deluxe wheeled case and mouthpiece.