This is a BD4 mouthpiece for B♭ clarinet. I purchased a selected item here, but I'm selling it because I bought another one and no longer use this. There are no scratches, but the mark on the front has worn off. ------------------- (The following are mainly impressions from users of B40L and, secondarily, BD4.) It's easy to blow through and articulate. Compared to the B40 series, the resonance may feel a bit more compact, but you can play without stress in chamber music in a hall with good acoustics. It's easy to control the throat tones, and the pitch tends to be stable. There's also less pitch instability. The pitch is less likely to go flat compared to the BD5. ------------------- How about trying it out? #clarinet #mouthpiece