The new Masters mouthpieces feature a specific bore, a new chamber, as well as a new exterior design. These are very easy blowing and have exceptional sound and tuning characteristics. These new mouthpieces from Vandoren come in two models, the CL4 & CL5. Both of the mouthpieces are supplied with the various finish Vandoren Masters Optimum Ligature and a plastic cap. The CL4 is characterized by a very radiant, clear sound and exceptional intonation. It allows precise, easy blowing and flawless articulation. The CL5 is characterized by a round, full sound, exceptional intonation and perfect homogeneity and projection.