| Cylindrical swivel | |
| model | length/mm |
| 3mm | 16 |
| 4mm | 17 |
| 4.5mm | 18 |
| 5mm | 20 |
| 6mm | 23 |
| 7mm | 24 |
| 8mm | 26 |
| 9mm | 29 |
| 10.5mm | 34 |
| 12mm | 38 |
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