BB-Tuba CC-Tuba F-Tuba Eb-Tuba Euphonium BB TUBA HBS 192 BB TUBA HBS 492 Technical details Bore size 19.5 mm Bell diameter 450 mm Height 900 mm Other informations 4 valves rotary 4/4 size Band and orchestra instrument Technical details Bore size 19/20 mm Bell diameter 450 mm Height 900 mm Other informations 4 valves piston/FRONT ACTION 4/4 size Band and orchestra instrument BB TUBA HBS 692 BB TUBA HBS 193 Technical details Bore size 19/20 mm Bell diameter 450 mm Height 900 mm Other informations 4 valves piston/TOP ACTION 4/4 size Band instrument Technical details Bore size 20.5 mm Bell diameter 480 mm Height 1120 mm Other informations 4 valves rotary German style Kaisertuba Hand made/on request