ZF WiFi Bass Clarinet Mouthpiece

Thank you for looking.
This is a mouthpiece for bass clarinet from WI&FI.
The model is ZF.
I purchased it new in December of last year and have used it 2-3 times.
Personally, I feel that the low register produces a very deep sound.
It is made of V-Quartz, not ebonite, so it will not discolor even if stored with the instrument.

I will lightly clean it before shipping.

If it does not sell, I may remove the listing.

This is a used item, so we are looking for buyers who understand this.