Vincent Bach trumpet mouthpiece, made in the USA, standard bore. M 16.25 MW The inner and outer rims are rounded but relatively flat. Produces a vibrant and rich sound, suitable for all genres, including concert band. - Brand: Bach - Model Name: Vincent Bach Mouthpiece - Country of Manufacture: Made in U.S.A. - Bore: Standard bore - Condition: Good Thank you for viewing. There are minor scratches, but no dents or plating wear. I have test-played it a few times.