Jupiter JTU1010S Intermediate BBb Tuba (Silver-Plated)As your student or loved one outgrows their starter horn, youll want to think about the next musical step. So, why not go with the Jupiter JTU1010 Intermediate BBb Tuba? It takes inspiration from Jupiters top level tuba, the JTU1110. It has a slightly smaller design, which helps younger players control the instrument. This step up horn has a 0. 709 inch bore for added breath support. Next up comes a yellow brass body and a matching 15 inch yellow