You can use it to trombone / baritone / euphonium of small shank (tubules). depth MD (slightly deeper) of the cup. "Button/coin batteries can cause severe injuries or even death when swallowed. Keep batteries out of reach of children.
Bach Trombone Mouthpiece (3506HALGR)
Bach Trombone Mouthpiece (K3505GS) 5GS Silver
BACH Trombone Mouthpiece (K3414G)
Bach Trombone Mouthpiece (3416HALGR)
BACH Trombone Mouthpiece (K3416HAL)
