· Vandoren Company has never been lost due to extensive control and testing to produce the highest quality products, and its desire to develop technology has never been lost even after a long history· HD (High Density=Density) Ebonite is a high density ebonite specifically engineered for Bandolen· New material after years of research and development, it enhances the natural acoustic properties of standard Ebonite, while optimizing the performance experience and player's sense· This is a new mouthpiece that can be used to make a big sound through the hall, and is recommended for all Clarinet players· Dark, rich, compact, perfectly balanced sound