Size Guide
| Internal Diameter (mm) | US/CANADA RING SIZE | UK/AUSTRALIA RING SIZE |
|---|---|---|
| 14.1 | 3 | F |
| 14.9 | 4 | H |
| 15.7 | 5 | J |
| 16.5 | 6 | L |
| 17.3 | 7 | N |
| 18.1 | 8 | P |
| 19.0 | 9 | R |
| 19.8 | 10 | T |
| 20.6 | 11 | V |
| 21.4 | 12 | X |
| 22.2 | 13 | Z |
| Internal Diameter (mm) | US/CANADA RING SIZE | UK/AUSTRALIA RING SIZE |
|---|---|---|
| 14.1 | 3 | F |
| 14.9 | 4 | H |
| 15.7 | 5 | J |
| 16.5 | 6 | L |
| 17.3 | 7 | N |
| 18.1 | 8 | P |
| 19.0 | 9 | R |
| 19.8 | 10 | T |
| 20.6 | 11 | V |
| 21.4 | 12 | X |
| 22.2 | 13 | Z |