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 Material: Nickel silver branches Slides: Both inside and outside are nickel silver, auxiliary F slide is not removable Bell: 12.25" diameter large-throated nickel silver
