Detail 01
Ebonite (hard rubber) body
Warmer, less brittle response than plastic, and dimensionally stable — but it dulls and warps if left in sun or a hot car.

Independent shopping perspective
A hard-rubber Bb clarinet mouthpiece in Vandoren's 13 Series pitch. For intermediate and advancing players ready to replace the piece their clarinet shipped with.

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
Warmer, less brittle response than plastic, and dimensionally stable — but it dulls and warps if left in sun or a hot car.
Detail 02
Vandoren's lower-pitch cut for A=440 tuning. Chosen so you are not pulling out constantly to sit in tune.
Detail 03
An open-tip design with a focused chamber. More dynamic range and volume available, at the cost of needing better air support.
Detail 04
Reeds that felt right on your old mouthpiece will feel stiff. Most players drop a half strength.
Detail 05
Professional-tier pricing for a single mouthpiece. It outlives several instruments, so cost spreads over years, not seasons.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
It fits standard Bb soprano clarinets from any maker — the cork tenon socket is a common size. It will not fit bass, alto or Eb clarinets.
Start a half strength below what you play now. The open tip needs a softer reed to speak cleanly, especially in the low register.
It is Vandoren's cut for A=440 pitch, standard in the US. The non-13 versions are pitched higher for A=442 European ensembles.
Swab it after every session and rinse with lukewarm water. Never use hot water or leave it in sunlight — heat discolors and distorts hard rubber.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.