Size Guide
Approximate sizes
| Diameter (MM / Inches) | Circumference (MM / Inches) | |||||
|---|---|---|---|---|---|---|
| 12.37 / 0.487 | -- | B | -- | -- | 1 | -- |
| 13.21 / 0.52 | 41.50 / 1.634 | D | 41.5 | 1 1/2 | 2 | 13.5 |
| 13.61 / 0.536 | 42.70 / 1.684 | E | 42.75 | 2 3/4 | 2.5 | 13.75 |
| 14.05 / 0.553 | 44.00 / 1.739 | F | 44 | 4 | 3 | 14 |
| 14.45 / 0.569 | 45.20 / 1.788 | G 1/4 | 45.25 | 5 1/4 | 3.5 | 14.5 |
| 14.86 / 0.585 | 46.50 / 1.836 | H 1/2 | 46.25 | 6 1/2 | 4 | 15 |
| 15.7 / 0.618 | 49 / 1.941 | J 1/2 | 49 | 9 | 5 | 15.75 |
| 16.51 / 0.65 | 51.50 / 2.042 | M | 52.75 | 11 1/2 | 6 | 16.5 |
| 17.35 / 0.683 | 54 / 2.146 | O | 55.25 | 14 | 7 | 17.25 |
| 18.19 / 0.716 | 56.60 / 2.249 | Q | 57.75 | 16 1/2 | 8 | 18 |
| 18.89 / 0.748 | 59.50 / 2.342 | R 3/4 | 59 | 19 | 9 | 19 |
| 19.80 / 0.778 | 62.10 / 2.442 | T 1/2 | 61.50 | 21 1/2 | 10 | 20 |
| 20.68 / 0.814 | 64.60 / 2.543 | V 1/2 | 64 | 24 | 11 | 20.75 |
| 21.49 / 0.846 | 67.20 / 2.644 | Y | 67.5 | 26 1/2 | 12 | 21.25 |
| 22.33 / 0.879 | 69.70 / 2.744 | Z+1 | 69 | 29 | 13 | 22 |