This is a mouthpiece for B♭ clarinet. It's the KF series, supervised by Kazuo Fujii. I purchased this new from a musical instrument store after trying it out. I was torn between the KF3-B and KF3-BW, so I bought both. After using them, I preferred the BW, so I'm selling the B. I used it for about a week. I used a patch when playing. Upon close inspection, there are slight ligature marks. - Brand: Gleichweit - Model: KF3-B (Nick Nommos B2 type / High Pitch) - Color: Black - Material: Resin - New Price: ¥36,000 Thank you for looking.