NIHAO RING SIZE
Size | US | HK | CIRCUMFERENCE | INTERNAL DIAMETER |
3 | 3 | 6 | 44.3 | 14.1 |
4 | 4 | 8 | 47 | 14.9 |
5 | 5 | 10 | 49.3 | 15.7 |
6 | 6 | 13 | 51.8 | 16.5 |
7 | 7 | 15 | 54.4 | 17.3 |
8 | 8 | 18 | 56.9 | 18.1 |
9 | 9 | 20 | 59.5 | 18.9 |
10 | 10 | 22 | 62.1 | 19.8 |
11 | 11 | 25 | 64.6 | 20.6 |
12 | 12 | 27 | 67.2 | 21.4 |
13 | 13 | 29 | 70 | 22.3 |