Bach 2½C vs Conn Harry Glanz 7M
Both mouthpieces share similar core dimensions — the differences are in the details.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bach 2½C
• Cornet
Cup diameter16.40 mm / 0.6457 in
Best suited for
All-round versatile — balanced cup for general playing
vs
Mouthpiece B
Conn Harry Glanz 7M
• Cornet
LeadCup diameter—
Best suited for
Harry Glanz signature model 7M
Lead/commercial; endorsed by Harry Glanz
Which is better?
Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.