Retail Price: ¥31,790 I purchased this around July of this year, selecting it from about 10 different mouthpieces for its smooth breath support. Not only does it allow for easy breathing, but it also gives the impression of a deeper tone than the conventional BD4. It's easy to articulate with, making it a low-stress mouthpiece. I bought this along with two BD5 mouthpieces, and since I mainly used the BD5, it's in like-new condition. Here's the official description: 【Brand and Model】 Vandoren's HD model is the perfect choice for professional musicians. It uses high-quality materials and delivers excellent sound quality. 【Material and Design】 This mouthpiece, made of plastic and cork, is durable and designed for comfort during performance. The refined black design complements any instrument. 【Playability】 This clarinet mouthpiece combines rich tone with excellent responsiveness, bringing out the player's expressiveness. In particular, it can handle a wide range of styles across genres.