| Standard French Horn Mouthpieces Specifications |
| Model | Rim | Cup Depth | Throat | Backbore | Playing Characteristics |
| Inner Diameter | Contour | Thickness |
| 28B | 16.87 | standard | semi-thick | semi-shallow (V-cup) | 3.9 | semi-wide | Ideal for Bb /HF horns. Smallest "V" cup in the line, but with a soft, mellow tone. |
| 29B | 17.07 | standard | semi-thick | semi-shallow (V-cup) | 3.9 | semi-wide | Fairly thick rim with a relatively small inner diameter for superior high tone. Medium throat for easy all-around playing. |
| 29C4 | 17.08 | semi-flat | thick | standard (U-cup) | 3.98 | semi-wide | Ideal for Bb /HF horns. Relatively sharp shoulder and medium throat for clear tone. |
| 29D4 | 16.88 | semi-flat | medium | semi-deep extra-( double-cup) | 4.5 | semi-narrow | Double-cup combining medium and extra-deep "V" cups. Fairly small inner diameter, but with a large throat for rich tone. |
| 30B | 17.27 | standard | medium thick | semi-shallow (V-cup) | 3.9 | semi-wide | Standard "V" cup model with a larger inner rim diameter than the 29B. Smooth airflow. Ideally matches horns with a very narrow bell. |
| 30C4 | 17.28 | semi-flat | medium | standard (U-cup) | 3.98 | standard | Medium inner rim diameter and "U" cup for fast response. Standard type with ideal resistance and powerful, rich tone. |
| 30D4 | 17.08 | semi-flat | standard | semi-deep (double-cup) | 4.5 | semi-narrow | Exceptionally rich tone. Matches horns with a wide bell. Excellent stability on high notes. |
| 31B | 17.3 | standard | medium thick | semi-shallow (V-cup) | 3.9 | semi-wide | Medium inner rim diameter with a "V" cup for a "traditional" soft horn tone. High volume over a wide range. A good match for horns with a narrow bell. |
| 31D4 | 17.28 | semi-flat | medium | semi-deep (double-cup) | 4.5 | semi-narrow | Heavy tone and high volume. Relatively flat rim of medium thickness for easy playability. |
| 32B | 17.67 | standard | semi-thick | semi-shallow (V-cup) | 3.9 | semi-wide | Large inner rim diameter for outstanding low-note tone. Largest "V" cup in the lineup. Rich, mellow tone. |
| 32C4 | 17.48 | semi-flat | medium | standard (U-cup) | 3.98 | standard | Plenty of volume. Relatively flat rim of medium thickness for easy playability. |
| 32D4 | 17.48 | semi-flat | medium | semi-deep (double-cup) | 4.5 | semi-narrow | Large cup volume for a dark, heavy sound and easy low notes. |
| 33C4 | 17.68 | semi-f |