福赛型号
| Fersa | 内直径（mm） | 外径（mm） | T（毫米） | 重量（Kg） |
|---|---|---|---|---|
| NK 19/16 | 19.00 | 27.00 | 16.00 | 0.03 |
| NK 20/20 | 20.00 | 28.00 | 20.00 | 0.03 |
| NK 22/16 | 22.00 | 30.00 | 16.00 | 0.03 |
| NK 22/20 | 22.00 | 30.00 | 20.00 | 0.04 |
| NK 24/16 | 24.00 | 32.00 | 16.00 | 0.03 |
| NK 24/20 | 24.00 | 32.00 | 20.00 | 0.04 |
| NK 25/16 | 25.00 | 33.00 | 16.00 | 0.03 |
| NK 25/20 | 25.00 | 33.00 | 20.00 | 0.04 |
| NK 26/16 | 26.00 | 34.00 | 16.00 | 0.03 |
| NK 26/20 | 26.00 | 34.00 | 20.00 | 0.04 |
| NK 30/30 | 30.00 | 40.00 | 30.00 | 0.09 |
| NK 32/20 | 32.00 | 42.00 | 20.00 | 0.06 |
| NK 32/30 | 32.00 | 42.00 | 30.00 | 0.10 |
| NK 35/20 | 35.00 | 45.00 | 20.00 | 0.07 |
| NK 38/20 | 38.00 | 48.00 | 20.00 | 0.08 |
| NK 38/30 | 38.00 | 48.00 | 30.00 | 0.11 |
| NK 40/20 | 40.00 | 50.00 | 20.00 | 0.08 |
| NK 45/20 | 45.00 | 55.00 | 20.00 | 0.08 |
| NK 47/20 | 47.00 | 57.00 | 20.00 | 0.10 |
| NK 50/25 | 50.00 | 62.00 | 25.00 | 0.15 |