By Pariah - Rings
| UK / AUS | US | EU | Inside Ring Diameter (mm) | Circumference (mm) |
| F | 3 | 44 | 14.1 | 44.2 |
| G | 3.5 | 45 | 14.5 | 45.5 |
| H | 4 | 46 | 14.9 | 46.7 |
| I | 4.5 | 48 | 15.3 | 48 |
| J | 5 | 49 | 15.5 | 48.7 |
| K | 5.5 | 50 | 15.9 | 49.9 |
| L | 6 | 52 | 16.3 | 51.2 |
| M | 6.5 | 53 | 16.7 | 52.5 |
| N | 7 | 54 | 17.1 | 53.8 |
| O | 7.5 | 55 | 17.5 | 55 |
| P | 8 | 56 | 17.9 | 56.3 |