Size Chart
Inner Diameter |
ES | UK | US | EU | China |
14mm | 4 | F | 3 | 44 | 4 |
14.6mm | 6 | G | 3.75 | 45 | 6 |
15.3mm | 8 | I | 4.5 | 47.5 | 8 |
16.0mm | 10 | K | 5.5 | 50 | 9 |
16.6mm | 12 | L | 6 | 52 | 11 |
17.2mm | 14 | N | 6.75 | 54 | 13 |
17.8mm | 16 | P | 7.25 | 56 | 15 |
18.4mm | 18 | Q | 8 | 58 | 17 |
19.1mm | 20 | S | 9 | 60 | 18 |