Tabela rozmiarów pierścionków
| Obwód (mm) | Średnica (mm) | Europa | Wielka Brytania | USA |
| 45mm | 14.0mm | 5 | G | 4 |
| 48mm | 15.0mm | 8 | I | 5 |
| 51mm | 16.0mm | 11 | L | 6 |
| 54mm | 17.0mm | 14 | N | 7 |
| 57mm | 18.0mm | 17 | P | 8 |
| 60mm | 19.0mm | 20 | S | 9 |
| 63mm | 20.0mm | 23 | U | 10 |
| 66mm | 21.0mm | 26 | W | 11 |
| 69mm | 22.0mm | 29 | Z | 12 |
| 72mm | 23.0mm | 32 | Z+ | 13 |