Bach 3C Trumpet Mouthpiece

·Medium cup with large 16.3mm diameter for a good compromise between ease of play and range ·Medium-wide rim - good for all around use ·#10 backbore ·No. 27, 3.66mm (.144") throat ·Requires a little less effort to play than the 1C or 1.5C ·Fairly large cup, good for all-around use. Bach's 3C trumpet mouthpiece has a large diameter and slightly larger cup size which work exceptionally well in all playing situations.