Detail 01
31.25 mm cup diameter; 7.62 mm throat
These are the stated measurements for the 3SL.

Independent shopping perspective
Heritage Series 3SL is the soloist-oriented tuba mouthpiece in this silver-bodied range, specified with a 31.25 mm cup diameter and 7.62 mm throat. Denis Wick describes it with a brilliant tone and high-register focus, and identifies it for F tuba work. The Heritage design uses a thin cup wall near the rim and added metal mass at the cup base. Gold plating covers the rim and cup, contrasting with the silver-plated body.

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 stated measurements for the 3SL.
Detail 02
The 3SL is identified specifically for soloist use on F tuba.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
The 3SL has a 31.25 mm cup diameter and a 7.62 mm throat.
It is identified for F tuba work.
The rim and cup are gold-plated; the body is silver-plated.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.