The instrument´s patented "dual plane" valve permits a unique tubing configuration for smooth transitions between Bb and F horns. The long leadpipe delivers remarkably accurate intonation, while the hollow valve rotors provide quick, free response. F/Bb double horn Handmade construction Hollow valve rotors Bell throat: medium large (ML) Bore: 12mm (0.472") Yellow brass Unlacquered finish Mouthpiece: 30C4 With detachable bell (YHR-667VS) Lacquered finish (YHR-667VL) With wreath (YHR-667VKL)
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