US | DIAMETER | CIRCUMFERENCE |
---|---|---|
5 | 15.8 mm | 49.6 mm |
6 | 16.5 mm | 51.8 mm |
7 | 17.2 mm | 54 mm |
8 | 18.2 mm | 57.2 mm |
9 | 19.1 mm | 60 mm |
10 | 19.8 mm | 62.2 mm |
11 | 20.6 mm | 64.8 mm |
12 | 21.6 mm | 67.9 mm |
EU | DIAMETER | CIRCUMFERENCE |
---|---|---|
50 | 15.8 mm | 49.6 mm |
52 | 16.5 mm | 51.8 mm |
54 | 17.2 mm | 54 mm |
56.5 | 18.2 mm | 57.2 mm |
60 | 19.1 mm | 60 mm |
62 | 19.8 mm | 62.2 mm |
64.5 | 20.6 mm | 64.8 mm |
68 | 21.6 mm | 67.9 mm |