This is a Vandoren Bb clarinet mouthpiece, model masters CL5. Vandoren is a French manufacturer primarily producing instrument accessories, and is widely used in Japan. This model, masters CL5, is a discontinued model. Both the exterior and the inner bore are different from the conventional models. Although ligatures may need to be considered as the taper is different from standard models, it is easy to play due to its good intonation and ease of breath, making it a comfortable model to play. I purchased it 2-3 years ago and used it a few times a month for several years, but I am selling it now because I have fewer opportunities to play the instrument and I own other mouthpieces. I have uploaded many images. I used it as my main mouthpiece for a considerable period, so there are some minor scratches and dullness from use. The table and tip appear to be in relatively clean condition without any noticeable scratches. I have cleaned it with a mouthpiece cleaner before listing. The images are taken after cleaning. This is a used item, so please make your judgment based on the images and usage frequency. Please refrain from purchasing if you are overly concerned about minor details. I work during the day, so I will primarily respond in the evenings, but I will respond as quickly as possible. Thank you.