Key: F / BbBore: .468-inchBell: 12.2-inchBell Type: DetachableBell Throat: LargeBell Material: Nickel SilverLeadpipe: FixedLeadpipe Material: Nickel SilverWrap: KruspeLinkage: StringFeatures: Ultra Thin Wall Thickness; Nickel Silver Construction with 10% Nickel Content; Hand Lapped Brass Rotary Valves; Large Throat Detachable Nickel Silver BellCase: YesMouthpiece: YesFinish: Nickel Silver