Trumpet Model: TR8203G Yellow brass material bell Cupronickel material tuning pipe Stainless steel pistons Trumpet Model: TR8203G Key: BbBore size: 11.66mmBell diameter: 123mmBell material: Yellow brassTuning pipe material: CupronickelValves: Stainless steelFirst slide thumb hook, adjustable third-slide finger ring with screw stopTwo water keysFinish: Clear lacquer Bb KEY TRUMPET