Detail 01
31.25mm cup diameter; 8.78mm throat
These are the listed measurements for the 3XL model.

Independent shopping perspective
The 3XL Heritage Series is a tuba mouthpiece for F tuba work, with a 31.25mm cup diameter and 8.78mm throat. A broad, rounded rim is specified for added comfort, making its design particularly relevant when playing for extended periods. Across the Heritage construction, the cup wall is reduced to 1.2mm near the rim and carries extra metal mass at its base, supporting the series’ responsive feel and rich sound. Its rim and cup are gold plated, while the body is silver plated.

Strong match
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
These are the listed measurements for the 3XL model.
Detail 02
The 3XL rim is specified for additional player comfort during extended playing.
Detail 03
The Heritage cup is thin near the rim, with extra metal mass at its lower section.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
It has a 31.25mm cup diameter and an 8.78mm throat.
It uses a wide, round rim for additional player comfort.
Yes. The 3XL is described as working well for F tuba.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.