| Extractions | Stems | Diameter ranges (mm) | Groups |
| E1 | Narrow | 2.8 - 4.5 | 1 |
| Medium | 4.8 - 7.8 | ||
| Wide | 8.0 - 10.0 | ||
| E2 | Narrow | 2.5 - 6.0 | 2 |
| Medium | 7.0 - 9.0 | ||
| Wide | 9.5 - 12.5 | ||
| E3 | Narrow | 2.8 - 4.5 | 1 |
| Medium | 4.8 - 7.8 | ||
| Wide | 8.0 - 10.0 | ||
| E4 | Narrow | 2.8 - 4.5 | 1 |
| Medium | 4.8 - 7.8 | ||
| Wide | 8.0 - 10.0 | ||
| E5 | Narrow | 2.5 - 6.0 | 2 |
| Medium | 7.0 - 9.0 | ||
| Wide | 9.5 - 12.5 | ||
| E6 | Narrow | 2.8 - 4.5 | 1 |
| Medium | 4.8 - 7.8 | ||
| Wide | 8.0 - 10.0 |