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Size chart
IT measurement | Diameter mm | Circumference mm |
6 | 14.5mm | 45.55mm |
7 | 14.8mm | 46.5mm |
8 | 15.1mm | 47.44mm |
9 | 15.4mm | 48.38mm |
10 | 15.7mm | 49.32mm |
11 | 16mm | 50.26mm |
12 | 16.4mm | 51.52mm |
13 | 16.7mm | 52.46mm |
14 | 17 mm | 53.4mm |
15 | 17.3mm | 54.35 mm |
16 | 17.7mm | 55.6 mm |
17 | 18mm | 56.55 mm |
18 | 18.3mm | 57.5mm |
19 | 18.5mm | 58.11mm |
20 | 18.9mm | 59.37 mm |
21 | 19.3mm | 60.63 mm |
22 | 19.5mm | 61.26 mm |
23 | 19.8mm | 62.2mm |
24 | 20.2mm | 63.46 mm |
25 | 20.5mm | 64.4 mm |
26 | 20.8mm | 65.34 mm |
27 | 21.1 mm | 66.28 mm |
28 | 21.5mm | 67.54 mm |
29 | 21.8mm | 68.48 mm |
30 | 22.1mm | 69.43 mm |
31 | 22.4mm | 70.37mm |