Air stream trainer trombone S

This is a training tool for trombone and tenor horn mouthpieces.
It's a Flow ball where you insert the mouthpiece and blow to lift the ball. You can check if air is being expelled through buzzing with the mouthpiece.

Please refer to the details below for specifications.

Although unused, this is a home-stored item, so please only purchase if you understand this.

https://www.thomann.de/be/astra_air_stream_trainer_trombone_s.htm

Thank you very much.

Please feel free to inquire about bundle purchase discounts.