SIZE CHART

INTERNATIONAL RING SIZE COMPARISON TABLE
Inner circle circumference
(mm)
inner diameter
(mm)
Asia U.S. U.K. Switzerland Germany France
49.9 15.7 9 5 J1/2 9 15.75 49
51.8 16.5 12 6 L1/2 11.5 16.5 51.5
54.4 17.3 14 7 O 14 17.25 54
56.5 18.1 16 8 Q 16.5 18 56.5
59.5 18.9 18 9 S 19 19 59
62.1 19.8 20 10 T1/2 21.5 20 61.5
64.6 20 23 11 V1/2 24 20.75 64
67.2 21.4 25 12 Y 27.5 21.25 66.5