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Size Guide
Rings
| Gaura Size | Diameter (mm) | USA | UK | Europe (EU) | Japan |
|---|---|---|---|---|---|
| 12 | 12 | — | — | — | — |
| 12.5 | 12.5 | — | — | — | — |
| 13 | 13 | — | — | — | — |
| 13.5 | 13.5 | — | — | — | — |
| 14 | 14 | 3 | F | 44 | 4 |
| 14.5 | 14.5 | 3.5 | G | 45 | 5 |
| 15 | 15 | 4 | H | 47 | 7 |
| 15.5 | 15.5 | 4.5 | I | 48.5 | 8 |
| 16 | 16 | 5 | J | 50 | 9 |
| 16.5 | 16.5 | 5.5 | K | 51.5 | 11 |
| 17 | 17 | 6 | L | 52.5 | 12 |
| 17.5 | 17.5 | 7 | M | 54 | 14 |
| 18 | 18 | 7.5 | N | 55.5 | 15 |
| 18.5 | 18.5 | 8 | O | 57 | 16 |
| 19 | 19 | 8.5 | P | 58 | 17 |
| 19.5 | 19.5 | 9 | R | 60 | 18 |
| 20 | 20 | 10 | T | 62 | 20 |
| 20.5 | 20.5 | 10.5 | U | 63 | 22 |