Our "SILVERITE" metal has a brilliance and resonance unexcelled in other metals being used in the making of mouthpieces. The formula for "SILVERITE" has been the result of extensive experimentation and many years of searching for just the right metal for a mouthpiece. - Our "SILVERITE" metal vibrates more freely so that you can feel the sound as well as hear it. It is more in tune with the vibrations of the metal in your instrument.