RING SIZING GUIDE
| Internal Diameter (mm) | US | UK | Europe |
| 15 | 4 | H - I | 47 |
| 15.75 | 5 | J - K | 50 |
| 16.5 | 6 | L - M | 52 |
| 17.5 | 7 | N - O | 55 |
| 18 | 8 | P - Q | 57 |
| 19 | 9 | R - S | 60 |
| Internal Diameter (mm) | US | UK | Europe |
| 15 | 4 | H - I | 47 |
| 15.75 | 5 | J - K | 50 |
| 16.5 | 6 | L - M | 52 |
| 17.5 | 7 | N - O | 55 |
| 18 | 8 | P - Q | 57 |
| 19 | 9 | R - S | 60 |