| Standard Series | | | |
| Model No. | Rim Inner Diameter (mm) | Throat (mm) | Characteristics |
| HR-28B | 16.87 | 3.9 | Ideal for Bb/HF horns. Smallest “V” cup in the line, but with a soft, mellow tone. |
| HR-29B | 17.07 | 3.9 | Fairly thick rim with a relatively small inner diameter for superior high tone. Medium throat for easy all-around playing. |
| HR-29C4 | 17.08 | 3.98 | Ideal for Bb/HF horns. Relatively sharp shoulder and medium throat for clear tone. |
| HR-29D4 | 16.88 | 4.5 | Double-cup combining medium and extra-deep “V” cups. Fairly small inner diameter, but with a large throat for rich tone. |
| HR-30B | 17.27 | 3.9 | Standard “V” cup model with a larger inner rim diameter than the 29B. Smooth airflow. Ideally matches horns with a very narrow bell. |
| HR-30C4 | 17.28 | 3.98 | Medium inner rim diameter and “U” cup for fast response. Standard type with ideal resistance and powerful, rich tone. |
| HR-30D4 | 17.08 | 4.5 | Exceptionally rich tone. Matches horns with a wide bell. Excellent stability on high notes. |
| HR-31B | 17.47 | 3.9 | 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. |
| HR-31D4 | 17.28 | 4.5 | Heavy tone and high volume. Relatively flat rim of medium thickness for easy playability. |
| HR-32B | 17.67 | 3.9 | Large inner rim diameter for outstanding lownote tone. Largest “V” cup in the lineup. Rich, mellow tone. |
| HR-32C4 | 17.48 | 3.98 | Plenty of volume. Relatively flat rim of medium thickness for easy playability. |
| HR-32D4 | 17.48 | 4.5 | Largest double-cup in the lineup. Also ideal for Wagnerian tuba. Large cup volume for a dark, heavy sound and easy low notes. |
| HR-33B | 17.87 | 3.9 | “V” cup with rich and mellow tone. |
| HR-33C4 | 17.68 | 3.98 | Large “U” cup. Can deliver a big, expansive sound. For advanced players. |
| HR-34B | 18.07 | 3.9 | Largest “V” cup in the lineup. Happy sound and low notes. For advanced players. |
| HR-34C4 | 17.88 | 3.98 | Plenty of volume. “U” cup for powerful performance. |
| HR-35C4 | 18.08 | 3.98 | Largest “U” cup in the lineup. Can deliver a heavy sound. Suitable for large orchestras. |
| | | |
| GP Series | | | |
| Model No. | Rim Inner Diameter (mm) | Throat (mm) | Characteristics |
| HR-30-GP | 17.08 | 4.4 | Smaller inner rim diameter than the 31. All-around type. Shallow “U” cup facilitates high notes, while a deep “V” makes low notes easy. |
| HR-31-GP | 17.28 | 4.4 | Medium rim configuration provides flexibility for difficult passages. Relatively large throat delivers a heavy, somewhat dark tone with extra volume. |
| HR-32-GP | 17.48 | 4.4 | Larger inner rim diameter than the 31. Authoritative low notes. Large cup volume for a rich, mellow tone. |
| | | |
| Silver 925 Series | | | |
| Model No. | Rim Inner Diameter (mm) | Throat (mm) | Characteristics |
| HR-30-ST | 17.08 | 4.4 | Smaller inner rim diameter than the 31. All-around type. Shallow “U” cup facilitates high notes, while a deep “V” makes low notes easy. |
| HR-31-ST | 17.28 | 4.4 | Medium rim configuration provides flexibility for difficult passages. Relatively large throat delivers a heavy, somewhat dark tone with extra volume. |
| HR-32-ST | 17.48 | 4.4 | Larger inner rim diameter than the 31. Authoritative low notes. Large cup volume for a rich, mellow tone. |
| | | |
| Signature Series | | | |
| Model No. | Rim Inner Diameter (mm) | Throat (mm) | Characteristics |
| HR-BACON | 17.99 | 4.5 | This mouthpiece has a wide inner rim diameter with a large V-shaped cup. |
| HR-SOMMERVILLE | 16.93 | 4.3 | The inner rim size is fairly narrow, for enhanced flexibility in every range, while the semi-flat rim contour gives tonal clarity. The V-shaped cup adds security to the high range while the open throat size allows rich full-bodied tone in any dynamic. |
