Attention mexican banda Band, Berkeleywind just come out with the special for you guys instruments, this horn is put 2 instruments together 1, piston trombone 2, alto Eb horn in one, you can play either horn you like.if's any guys busy. you can play in his position.also can play tenor note for Bb piston trombone.  have been designed and test by the professional Banda musician.
Features:

• with Eb Alto Horn sound,
  
• Stunning Gold Lacquer Finish
• US Engineering
  
• Eb Key
• 3 Smooth Action Pistons
• Bell Diameter: 181.8 mm (7.16")
• Bore: 12.4 mm (0.488")