Key: BbBore: .444-inchLeadpipe: StandardLeadpipe Material: Yellow BrassBell: 4.7-inch Hand Hammered Lightweight One Piece with French Bead Flat RimBell Material: Yellow BrassValves: Monel Piston1st Valve Slide Adjustment: Thumb Saddle3rd Valve Slide Adjustment: Fixed RingFeatures: Lightweight One Piece Bell with French Flat Rim; Boxed Bronze Valve SpringsCase: YesMouthpiece: YesFinish: Lacquer, Silver