Detail 01
Strength 4.5
Hard. More resistance, but it holds the low register without spreading and keeps the altissimo from thinning out.

Independent shopping perspective
A single synthetic bass clarinet reed in a hard strength 4.5. For experienced players who want a reed that stays stable across long sessions.

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
Hard. More resistance, but it holds the low register without spreading and keeps the altissimo from thinning out.
Detail 02
No soaking, no warping, no waiting for it to stabilize. Consistent from first note to last.
Detail 03
Longer and wider than a Bb clarinet reed. It will not work on a soprano clarinet mouthpiece.
Detail 04
Fibracell's standard line in half-step strengths, so 4 is available if 4.5 feels too resistant.
Detail 05
One reed rather than a box. Higher up-front cost per piece, offset by a much longer usable life.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
If you play cane 4 or harder comfortably, it should work. If you're on 3 or 3.5, drop down — a too-stiff reed makes the low register unresponsive.
No. It doesn't absorb moisture, so there's no wetting, no break-in, and no rotation schedule.
No. Bass clarinet reeds are a larger cut and won't seat properly on a soprano clarinet mouthpiece.
Much longer than cane, since humidity and moisture cycling don't degrade it. Replace when the tip chips or frays, or when response noticeably dulls.