Key: F-Bb Pitch: A445 with independent Bb tuning Bore: 11.89 mm (.468") Mouthpipe: .310 venturi of nickel silver Lever action: Noiseless string action, short stroke with stainless steel springs Valve rotors: Tapered hand-lapped brass Bearing plates: Tapered brass Branches, bows and ferrules: Nickel silver Slides: Both inside and out are solid nickel silver Bell: 12.25" diameter large-throated hand-hammered nickel silver Waterkey: On mouthpipe Options: Extra-long main and Bb tuning slides, detachable bell and flat case available as model H279
