RINGS

OHM Ring Size
Inside Diameter (mm)
Inside circumference (mm)
4
14.88
46.8
5
15.7
49.3
6
16.51
51.9
7
17.32
54.4
8
18.14
57
9
18.95
59.5
10
19.76
62.1
11
20.57
64.6
12
21.39
67.2
13
22.2
69.7