| Standard Series (Small Shank) | | |
| Model No. | Rim Inner Diameter (mm) | Throat (mm) | Characteristics |
| SL-45A | 24.26 | 5.85 | Small inner rim diameter with an extremely shallow cup for brilliant tone. Easy high notes. Ideal for bass trumpet. |
| SL-45C2 | 24.26 | 5.85 | Small inner rim diameter with a clean bite. Easy playability with a bright tone. Popular with studio players. |
| SL-46B | 24.58 | 5.85 | Shallower cup than the 46C2. Outstanding high register. Fairly sharp shoulder. Brilliant tone. |
| SL-46C2 | 24.59 | 5.85 | Relatively large inner rim diameter. A good choice for advanced jazz players. Ideal for demanding professional studio applications. |
| SL-47 | 24.98 | 5.85 | Outstanding endurance. Rich tone suitable for ensembles and orchestras. |
| SL-48A | 25.25 | 5.32 | The 48 rim combined with a very shallow cup. For alto trombones. Bright tone with good volume. Ideal for baroque compositions. |
| SL-48D | 25.25 | 6.62 | Same rim as the 48 with a relatively deep cup. Rich lower register with a rich, soft tone. Also ideal for euphonium. |
| SL-48 | 25.25 | 6.62 | Well-balanced rim and cup for all-around playing. Refined design meets the needs of professional players. |
| SL-51B | 25.23 | 6.92 | The 51 rim with a relatively shallow cup. Powerful sound. Popular with ensemble and orchestra euphonium players. |
| SL-51 | 25.23 | 6.92 | Relatively large inner rim diameter with large cup volume for a dark sound. Standard euphonium model with a beautiful rich tone. |
| SL-51C4 | 25.23 | 6.92 | Shallower cup than the 51. Plenty of volume and power. Solid tone throughout the instrument's range. Ideal for symphony orchestra playing. |
| SL-51D | 25.24 | 7.11 | An even deeper cup than the 51 for a heavy, rich tone. Specifically for euphonium. Ideal for advanced players who prefer a dark sound. |
| SL-52 | 25.65 | 7.11 | Larger inner rim diameter and cup than the 51. Heavy tone. For advanced players. |
| | | |
| Standard Series (Large Shank) | | |
| Model No. | Rim Inner Diameter (mm) | Throat (mm) | Characteristics |
| SL-47 | 24.98 | 5.85 | Smaller inner rim diameter than the 48. Extended endurance. Plenty of volume. Ideal for ensemble and orchestra playing. |
| SL-48D | 25.25 | 6.62 | Same rim as the 48 with a relatively deep cup. Rich low register with a soft tone. Also ideal for euphonium. |
| SL-48 | 25.25 | 6.62 | Well-balanced rim and cup with a fairly narrow backbore. Meets the needs of professional players. |
| SL-51B | 25.23 | 6.92 | The 51 rim with a relatively shallow cup. Powerful sound. Popular with ensemble and orchestra euphonium players. |
| SL-51D | 25.24 | 7.11 | An even deeper cup than the 51 for a heavy, rich tone. Specifically for euphonium. Ideal for advanced players who prefer a dark sound. |
| SL-51 | 25.23 | 6.92 | Relatively large inner rim diameter with large cup volume for a dark sound. Standard euphonium model with a large backbore. |
| SL-51C4 | 25.23 | 6.92 | Shallower cup than the 51. Plenty of volume and power. Solid tone throughout the instrument's range. Ideal for symphony orchestra playing. |
| SL-52 | 25.65 | 7.11 | Larger inner rim diameter and cup than the 51. Heavy tone. For advanced players. |
| SL-53 | 25.91 | 7.11 | Extremely large cup. Outstanding middle and low registers. Heavy tone. Ideal for beginning bass trombone players. |
| SL-54 | 26.15 | 7.11 | Larger inner rim diameter and cup than the 52. Suitable for larger orchestras. |
| SL-55 | 26.35 | 7.11 | Larger inner rim diameter and cup than the 54. Heavy tone. Also ideal for bass trombone. |
| | | |
| GP Series (Small Shank) | | |
| Model No. | Rim Inner Diameter (mm) | Throat (mm) | Characteristics |
| SL-45C2-GP | 24.26 | 5.85 | Small inner rim diameter with a clean bite. Easy playability with a bright tone. Popular with studio players. |
| SL-48-GP | 25.25 | 6.62 | Well-balanced rim and cup for all-around playing. Refined design meets the needs of professional players. |
| | | |
| GP Series (Large Shank) | | |
| Model No. | Rim Inner Diameter (mm) | Throat (mm) | Characteristics |
| SL-48-GP | 25.25 | 6.62 | Well-balanced rim and cup with a fairly narrow backbore. Meets the needs of professional players. |
| | | |
| Signature Series | | | |
| Model No. | Rim Inner Diameter (mm) | Throat (mm) | Characteristics |
| SL-LANDGREN-S | 25.11 | 6.25 | The Landgren mouthpiece has a comparatively large rim for jazz offering players a powerful sound and great flexibility. |
| SL-LANDGREN-GP | 25.11 | 6.25 | The Landgren mouthpiece has a comparatively large rim for jazz offering players a powerful sound and great flexibility. |
| SL-TRUDEL-S | 25.23 | 7.15 | The Trudel mouthpiece offers players a big warm sound, and a rim and cup size well suited for orchestral as well as solo use. |
| SL-TRUDEL-GP | 25.23 | 7.15 | The Trudel mouthpiece offers players a big warm sound, and a rim and cup size well suited for orchestral as well as solo use. |
