All B&S Challenger professional slide trombones are equipped with 3B ball bearing linkages on both ends of the valve connecting arm to provide the ultimate in smooth and quiet operation. The F-attachment is equipped with a German made light rotary valve and a three-dimensional one piece bow for less resistance and quicker response.
Specifications- 13,89mm/0.547" orchestral bore – for freer airflow, big tone and sound projection
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215mm/8.465" bell
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Nickel silver outer slides and chrome plated inner slides
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Yellow brass bell and bows
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Open wrap design – Freer blow through F slide
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Clear lacquered
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Backpack case