Key: Bb Bore: 459-inch Leadpipe: #25 Standard Taper Leadpipe Material: Yellow Brass Bell: 4.8-inch One-Piece #37 Taper Bell Material: Yellow Brass with Interior Gold Wash Valves: Monel Piston 1st Valve Slide Adjustment: Thumb Saddle or Trigger 3rd Valve Slide Adjustment: Fixed Ring or Trigger with Adjustable Slide Stop Features: Gold Plated Valve Caps, Water Keys; Gold Annodized Valve Stems; Black Sardonyx Precious Gemstone Fingerbuttons Case: Double Case Mouthpiece: Gold Plated Bach 7C Finish: