RINGS SIZES GUIDE

 
IL EUR US DIAMETER (mm)
1 41 1 13.0
2 42 2 13.4
3 43 13.7
4 44 3 14.0
5 45 14.3
6 46 3.75 14.6
7 47 4 15.0
8 48 4.5 15.3
9 49 5 15.6
10 50 5.25 15.9
11 51 5.5 16.2
12 52 6 16.5
13 53 6.25 16.8
14 54 7 17.2
15 55 7.25 17.5
16 56 7.5 17.8
17 57 8 18.1
18 58 8.25 18.4
19 59 8.5 18.8
20 60 9 19.1
21 61 9.25 19.4
22 62 9.5 19.7
23 63 10.25 20.0
24 64 10.5 20.3
25 65 11 20.6
26 66 11.5 21.0
27 67 12 21.3
28 68 12.25 21.6
29 69 12.5 22.0
30 70 13 22.3