Vandoren Series 13 Bb Clarinet MouthpieceDesigned for the American market at A440, the Vandoren Series 13 Bb Clarinet Mouthpiece is suitable for all musicians, especially those who may struggle with playing slightly sharp at A442. All Series 13 mouthpieces come with the Profile 88 beak tip, which has a more gentle gradient than the traditional design, making it a particular favorite amongst saxophone doublers.