The opinion of the Vandoren experts Its facing length gives it great flexibility, a good balance between timbre and roundness. > Explanation of the mouthpiece's structure and its opening Opening 1/100 mm 115 Facing length Long Instrument Bb clarinet Series Traditional clarinet mouthpieces CM318 (Single Mouthpiece) Traditional Beak
Its facing length gives it great flexibility, a good balance between timbre and roundness.