Vintage Martin Elkhart U 21 Mouthpiece - 150 grams - Brass with silver plating
£112.43
It has a26 mm (1.02 in) inside cup depth and is a1‑piece, solid brass mouthpieceColin Dorman. The U‑21 is intended forMartin trumpets that have a17.5 mm inside cup and4 mm rim width. Inside cup depth: 26 mm (1.02 in).
