Ring sizes
Inner diameter (mm) |
Ring size DE |
Ring size US |
15.9 |
50 |
5.3 (5) |
16.2 |
51 |
5.7 (5-) |
16.5 |
52 |
6.1 (6) |
16.8 |
53 |
6.4 (6) |
17.2 |
54 |
6.8 (6-) |
17.5 |
55 |
7.2 (7) |
17.8 |
56 |
7.6 (7-) |
18.1 |
57 |
8.0 (7-) |
18.4 |
58 |
8.4 (8) |
18.8 |
59 |
8.7 (8-) |
19.1 |
60 |
9.1 (9) |
19.4 |
61 |
9.5 (9-) |
19.7 |
62 |
9.9 (9-) |
20.1 |
63 |
10.3 (10) |
20.3 |
64 |
10.7 (10-) |
20.6 |
65 |
11.0 (11) |
21 |
66 |
11.4 (11) |
21.3 |
67 |
11.8 (11-) |
21.6 |
68 |
12.2 (12) |
21.9 |
69 |
12.6 (12-) |
22.3 |
70 |
13.0 (13) |