| Model number | φD(mm) | Le(mm) |
| WRS080 | 0.8 | 5.0 |
| WRS100 | 1.0 | 6.5 |
| WRS120 | 1.2 | |
| WRS140 | 1.4 | |
| WRS150 | 1.5 | |
| WRS160 | 1.6 | |
| WRS180 | 1.8 | 8.0 |
| WRS200 | 2.0 |
| Model number | φD(mm) | Le(mm) |
| WRS080 | 0.8 | 5.0 |
| WRS100 | 1.0 | 6.5 |
| WRS120 | 1.2 | |
| WRS140 | 1.4 | |
| WRS150 | 1.5 | |
| WRS160 | 1.6 | |
| WRS180 | 1.8 | 8.0 |
| WRS200 | 2.0 |
