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INTERNATIONAL RING SIZE CONVERTOR
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American Size
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UK Size
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European Size
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Asian Size
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Inside Diameter (mm)
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5
|
J
|
49
|
11
|
15.40
|
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5.5
|
J 1/2
|
50
|
12
|
15.81
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|
6
|
L
|
51
|
13
|
16.23
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|
6.5
|
M
|
53
|
14
|
16.68
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|
7
|
N
|
54
|
15
|
17.09
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|
7.5
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O
|
55
|
16
|
17.52
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|
8
|
P
|
56
|
17
|
17.90
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|
8.5
|
P 1/2
|
58
|
18
|
18.28
|
|
9
|
R
|
59
|
19
|
18.69
|
|
9.5
|
S
|
60
|
20
|
19.12
|
|
10
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T
|
62
|
21
|
19.55
|
|
10.5
|
U 1/2
|
63
|
22
|
20.05
|
|
11
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V 1/2
|
64
|
23
|
20.37
|
|
11.5
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W
|
66
|
24
|
20.83
|
|
12
|
X 1/2
|
67
|
25
|
21.32
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|
12.5
|
Y 1/2
|
68
|
26
|
21.65
|
|
13
|
Z 1/2
|
69
|
27
|
22.10
|
For American/USA size, it is avaliable from Size 5 to 11.
For European size, it is avaliable from Size 49 to 64.
For China/HK/Asian size, it is avaliable from Size 11 to 23.
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