Detail 01
.984 in / 24.99 mm cup diameter
A real step up from the 45 and 46 beginner sizes, without the lip demand of a 51 or 52.

Independent shopping perspective
Small-shank trombone mouthpiece with a .984-inch cup. The all-around size in this line — even response and solid intonation, from advancing student to professional.


Strong match
Consider the trade-offs
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
A real step up from the 45 and 46 beginner sizes, without the lip demand of a 51 or 52.
Detail 02
Seats in small and medium bore tenor slides only. It will not fit a large-shank receiver.
Detail 03
The standard bore across most of this line — moderate resistance, neither free-blowing nor tight.
Detail 04
The 47C4 is the same cup with a wider semi-flat rim. This one trades cushion for a more direct feel and flexibility.
Detail 05
Firm, slick surface, harder than gold, and it shows rim wear after years of steady playing.
Final check

Product questions
Straight answers to the questions shoppers most often ask about this product.
No. Large bore tenors take a large shank. This is a small-shank mouthpiece and won't seat correctly in that receiver.
It works for students and professionals alike. Absolute beginners often start on the 45 or 46, which are slightly smaller and easier to control at first.
The 47B uses a contour profile and a C throat for quicker response and a more resonant high register. The 47 is the more general-purpose choice.
It's a trombone size. For euphonium, the deeper 51D and 52D are the ones cut for that horn, with the 46D suiting younger players.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.