The Jupiter JSP1010 FiberBrass series BBb Sousaphones offer the player the best of both worlds �� the lightweight body made of fiberglass and the carrying power and resonance of a 26" all-brass bell. The FiberBrass 1010 features a .687" bore and a removable brass front action valve section that also matches the bell finish for easy maintenance and cleaning. The JSP1010 Sousaphone also offers three stainless steel piston valves for fast, smooth action. This FiberBrass Sousaphone includes a hard-shell case and mouthpiece and is available in lacquer or silver-plate finish.