CL5 mouthpiece for Bb clarinet from Masters series that is characterized by a round, full sound with exceptional intonation and perfect homogeneity and projection. It features a specific bore, a new chamber as well as a new exterior design. It is very easy blowing and has exceptional sound and tuning characteristics. It has long facing and tip opening of 113.5 (1/100mm), and it comes supplied with pewter M/O ligature and cap. It works best with Vandoren #3 to #4 reeds.