The conception of this series was the fruit of research on both external shape (particularly the beak) and sound, in order to meet the needs of today's saxophone players. Saxophone Type/Facing Options: SL3 - Very easy blowing, particularly versatile, meets all needs. Tip Opening - 114 SL4 - A little more open than the SL3, this mouthpiece rapidly became a standard with saxophonists. Tip Opening - 123 AL3 - With its exceptional roundness, the ultimate classical mouthpiece. Tip Opening - 152 AL4 - A little more open than the AL3, while maintaining the sound aesthetic of the Optimum series. Tip Opening - 163+ TL3 - Roundness, depth and precision. Tip Opening - 176 TL4 - A little more open than the TL3, a richer timbre. Tip Opening - 195 BL3 - The standard baritone mouthpiece. Tip Opening - 185 BL4 - Versatile mouthpiece, suits both classical and jazz.