O”Malley Bass Trumpet
This is a Bass Trumpet pitched in Bb that plays one octave below the regular trumpet. It has a bore compared to small trombone.
Uses small shank trombone or euphonium mouthpiece. .460 bore. 7 Inch bell
There is a lot of classical musical applications for this instrument, and very popular with Mariachi groups !
Case and mouthpiece included
Here is a little video to give you an example of the sound and range. https://youtu.be/2jGoP1NLqOg