| Standard Series | | | |
| Model No. | Rim Inner Diameter (mm) | Throat (mm) | Characteristics |
| BL-58 | 26.84 | 7.25 | Medium cup and rim for easy playability through the low and middle registers. Crisp attack with outstanding flexibility. |
| BL-59 | 27.22 | 7.25 | Relatively thin rim. Rich sound even on pedal tones. Voluminous cup for solid lows and plenty of power. |
| BL-60 | 28.25 | 8.1 | Very deep cup with a large throat and backbore. Powerful, deep, low tone. For advanced players. |
| BL-60B | 27.83 | 6.92 | A German-style combination of fairly thick rim with relatively shallow cup. Excellent flexibility. Easy playability and clear tone in the middle and low registers. |
| | | |
| GP Series | | | |
| Model No. | Rim Inner Diameter (mm) | Throat (mm) | Characteristics |
| BL-59-GP | 27.22 | 7.25 | Relatively thin rim. Rich sound even on pedal tones. Voluminous cup for solid lows and plenty of power. |
| | | |
| Signature Series | | | |
| Model No. | Rim Inner Diameter (mm) | Throat (mm)
| Characteristics |
| BL-YEO-GP | 28.72 | 8 | The Yeo mouthpiece features a large symphonic size cup for a big rich sound. It is characterized by a full, centered tone with a focused core and a brilliant, well-defined overtone series. |
| BL-YEO-ST | 28.72 | 8 | The Yeo mouthpiece features a large symphonic size cup for a big rich sound. It is characterized by a full, centered tone with a focused core and a brilliant, well-defined overtone series. |
