Mouthpiece Adapter, Small Trombone to Large Trombone Receiver
Allows a small shank trombone mouthpiece to be used on an instrument that requires a standard large shank mouthpiece, such as large bore tenor trombone, bass trombone, and most large euphoniums. Not for use on old Elkhart Conn 88Hs with "Remington" receivers (for these, use 045889 instead). Recommended as a temporary measure only.