Bb convertible with .570" bore and 11" bell. First-rate nickel silver pistons, lacquered brass finish. Includes deluxe hardshell case with wheels and valve oil. In recent years Jupiter's quality and consistency have skyrocketed due to the hiring of the world's best design engineers. Components are generated by computerized machinery with incredible precision so the highly trained craftspeople can concentrate almost entirely on exacting assembly and setup. All pads are hand seated, all valves and tuning slides are hand lapped, and all keys are hand aligned and adjusted. High-quality durable finishes are applied by hand, and each instrument is personally inspected and play-tested before leaving the factory.