DEG Comparison Chart:
3C - Medium cup depth, 16.30 Approx. cup diameter, Medium Wide rim shape: Compare to Bach 3C Trumpet Mouthpiece
5C - Medium cup depth, 16.25 Approx. cup diameter, Medium Wide rim shape: Compare to Bach 5C Trumpet Mouthpiece
7C - Medium cup depth, 16.20 Approx. cup daimeter, Medium Wide rim shape: Compare to Bach 7C Trumpet Mouthpiece