Mouthpiece facing Alto
| 4 | < | .072 inch / 1.83 mm |
| 5 | .072 inch / 1.83 mm | |
| 6 | .075 inch / 1.90 mm | |
| 7 | .080 inch / 2.03 mm | |
| 8 | .085 inch / 2.16 mm | |
| 9 | > | .085 inch / 2.16 mm |