

Replacement machine head with 2-screw and banjo bolt as counterfort.
| Model | ArtNo. | Model | Finish | Buttons | Surface | Button options | Ratio | Weight g/item | Bore mm |
|---|---|---|---|---|---|---|---|---|---|
| ST6KNI | 520 | 3left + 3right | Machine-polished | Plastic | Nickel | 6 in line | 1 : 16 | 30 | 9.8 |
| ST6KNI-K | 520K | 3left + 3right | Machine-polished | Plastic-White | Nickel | 6 in line | 1 : 16 | 30 | 9.8 |
| ST6KG | 521 | 3left + 3right | Machine-polished | Plastic | Gold | 6 in line | 1 : 16 | 30 | 9.8 |
| ST6KVC | 520VC | 3left + 3right | Hand-polished | Plastic | Vintage-Copper | 6 in line | 1 : 16 | 30 | 9.8 |