Due to the unique design of some products, their size can differ from the standard ones. Refer to the size guide for further details.
| USA & Canada | Diameter (mm) | Europe | UK & Australia |
| 3 | 14.1 | 44 | F |
| 3.25 | 14.3 | 45 | F1/2 |
| 3.5 | 14.5 | 45.5 | G |
| 3.75 | 14.7 | 46 | G1/2 |
| 4 | 14.9 | 47 | H |
| 4.25 | 15.1 | 47.5 | H1/2 |
| 4.5 | 15.3 | 48 | I |