Key: F / BbBore: .468-inchBell: 12.25" diameterBore: .468"Key: F-BbPitch: A445 with independent Bb tuningBell: 12.25-inchBell Type: FixedBell Throat: LargeBell Material: Hand-Hammered Nickel SilverLeadpipe: FixedLeadpipe Material: Nickel Silver with .310 VenturiWrap: KruspeLinkage: StringFeatures: Solid Nickel Silver Inner and Outer Slides; Water Key on LeadpipeCase: YesMouthpiece: Farkas Medium Deep CupFinish: Nickel Silver