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Double bore .570'' / .610'' = 14.5 / 15.5 mm.
Brass bell Ø 11'' = 280 mm.
Gold-brass leadpipe.
Nickel silver outer slides.
4 top-action valves Inline.
Stainless steel valves.
Finish: Clear coating.
Original VINCENT BACH 6 1/2AL mouthpiece and valve oil .
Light case with backpack straps.