Halo Rings

Inside Circumference
IN	MM

US, Canada, Mexico

UK, Australia, Ireland, New Zealand, South Africa

France

Germany, Russia, Ukraine, Asia

India, China, Japan, South America, Turkey, Israel

Italy, Spain, Netherlands, Switzerland

1.74

44.2

3

F

44

14

4

1.84

46.8

4

H 1/2

46.5

15

7

6.5

1.97

49.3

5

J 1/2

49

15.75

9

2.04

51.9

6

M

51.5

16.5

12

11.5

2.14

54.4

7

O

54

17.25

14

2.24

57

8

Q

56.5

18

16

16.5

2.34

59.5

9

R 3/4

59

19

18

19

2.44

62.1

10

T 1/2

61.5

20

21.5

2.54

64.6

11

V 1/2

64

20.75

23

24

2.65

67.2

12

Y

66.5

21.25

25

26.5

2.75

69.7

13

Z + 1

69

22

27

29

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