Vandoren Bb Clarinet MouthpieceThe only difference between the traditional and the 'Profile 88' Vandoren mouthpiece is the exterior angle of the beak. The musician is free to choose the model which suits his purpose in terms of best playing position, easiest sound projection, greatest playing comfort and the most controllable and precise articulation. M15 Great articuation ease. Offers musicians a colorful spectrum of sound, recommended reed strength 3 1 2 5 5RV The time proven