The Bach 50B3O bass trombone delivers a bold symphonic tone with smooth playability. Its one-piece, 9-1/2" bell is hand-hammered from yellow brass for projection and clarity. The open-wrap F and Gb rotors provide seamless switching between keys with minimal airflow resistance. The .562" bore and chrome-plated nickel silver inner handslide tubes enable nimble slide technique. Whether you're performing a concerto or movie soundtrack, the 50B3O gives you the power and control to express your musical vision. Visit us today to experience the Bach 50B3O's inspiring sound and feel for yourself.