The JP379 Sterling CC Tuba was created in collaboration with Paul Riggett of Sterling Brass.  The JP379 represents a fusion of professional level Sterling components and design with the affordability and durability normally associated with the JP brand.  The JP379 features 4 pistons + 1 rotary valve, 4/4 size, with a bore of 0.748" - 0.807" (19-20.5mm) and a bell size of 17.75" (450mm).  Comes with case and mouthpiece.