[-] CENTER-RING
| 규격(UNIT:㎜) | A(Ø) | B(Ø) | C(T) |
| NW10-NW16 | 11.8 x 16.8 | 3.9 | 8 |
| NW10 | 11.8 | 3.9 | 8 |
| NW16 | 16.8 | 3.9 | 8 |
| NW25 | 25.8 | 3.9 | 8 |
| NW40 | 40.8 | 3.9 | 8 |
| NW50 | 51.8 | 3.9 | 8 |
| NW63 | 69.8 | 3.9 | 8 |
| NW80 | 85.8 | 3.9 | 8 |
| NW100 | 101.8 | 3.9 | 8 |
| NW125 | 126.8 | 3.9 | 8 |
| NW160 | 152.5 | 3.9 | 8 |
| NW200 | 212.5 | 3.9 | 8 |
| NW250 | 260.5 | 3.9 | 8 |
| NW320 | 316.5 | 5.6 | 14 |