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Size Guide - Rings

RINGS
US AUS & EU Internal Diameter (mm) Internal Circumference (mm)
5 J 1/2 15.7 49.3
6 M 16.7 52.5
7 O 17.3 54.4
8 Q 18.3 57.6
9 R 3/4 18.9 59.5
10 T 1/2 19.8 62.1
11 V 1/2 20.6 64.6
12 Y 21.4 67.2

Size and cut may vary between brands; use this as a general guide.

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