Faxx Mouthpiece Adapter - French Horn-Mellophone, Tenor Trombone-Bass Trombone, Tenor Trombone-Besson Euphonium

These economical mouthpiece adapters will quickly allow players to play an instrument with a mouthpiece that does not fit into it's receiver.  They are great for doublers that may not want to learn a new mouthpiece for marching band or have not yet found their mouthpiece of choice for their new instrument.   Some Rough measurements: Tenor-Besson large side inner diameter is 12.19mmsmall side inner diameter is 10.59mmsmall side outer diameter 12.32mmlarge side outer diameter up against the collar is 13.95mm Tenor-Bass large side inner diameter 12.36mmsmall side inner diameter 10.67mmsmall side outer 12.52mmlarge outer 14.2mm