Bb Key trumpet Bb Key TrumpetMaterial: Brass Flat: Bb Key Surface: Lacquer gold, Stainless Steel Valves Size: Bare11.8mm, Bell DIA. 125mm Cupronickel Tuning Pipe Hand Engraving Packing with Foambody or Wooden Shell Case Finished: Gold Lacquer, Silver Plated, Gold Plated, Nickel Plated Bb Key Trumpet