Jupiter JTB1150FQ 1100 Performance Series F Attachment Trombone - Key of Bb/FJupiter 1100 Performance Series trombones are designed for the advancing trombonist. The JTB1150F feature a large bore for a rich, full tone and the choice between yellow or rose brass to match the players preferred tone quality. They feature a large bore for a rich, full tone and the choice between yellow or rose brass to match the players preferred tone quality. Features Lacquered Brass Body is produced using state of the art technology to ensure an