Size Chart
 EUR Circum. mm
REASO
|
 Diameter mm
|
ESP / IT
|
US / AUS
|
UK
|
| 44 | 14 | 4 | 3 | F 1/2 |
| 45 | 14.3 | 5 | 3 1/4 | G |
| 46 | 14.6 | 6 | 3 3/4 | H |
| 47 | 14.9 | 7 | 4 | H 1/2 |
| 48 | 15.3 | 8 | 4 1/2 | I 1/2 |
| 49 | 15.6 | 9 | 5 | J 1/2 |
| 50 | 15.9 | 10 | 5 1/4 | K |
| 51 | 16.2 | 11 | 5 3/4 | L |
| 52 | 16.6 | 12 | 6 | L 1/2 |
| 53 | 16.9 | 13 | 6 1/4 | M 1/2 |
| 54 | 17.2 | 14 | 7 | N 1/2 |
| 55 | 17.5 | 15 | 7 1/4 | O |
| 56 | 17.8 | 16 | 7 1/2 | P |
| 57 | 18.1 | 17 | 8 | P 1/2 |
| 58 | 18.5 | 18 | 8 1/4 | Q 1/2 |
| 59 | 18.8 | 19 | 8 3/4 | R |
| 60 | 19.1 | 20 | 9 | S |
| 61 | 19.4 | 21 | 9 1/2 | S 1/2 |
| 62 | 19.7 | 22 | 10 | T 1/2 |
| 63 | 20 | 23 | 10 1/4 | U 1/2 |
| 64 | 20.4 | 24 | 10 3/4 | V |
| 65 | 20.7 | 25 | 11 | W |