INTERNATIONAL SIZING CHART

All our rings are adjustable to the size in the table. if your size is not in that range please contact us for a custom order here.

Internal diameter (mm) 15.6 - 15.9 16.5 16.9 - 17.9 17.2 - 17.83 17.9 - 18.5
Internal diameter (inches) 0.61 - 0.63 0.65 - 0.66 0.67 - 0.68 0.69 - 0.7 0.71 - 0.73
Spain / France 10 12 14 16 18
European Union 50 52 54 56 58
United Kingdom J-K L-L'1/2 M 1/2 - N 1/2 O - P P 1/2 -  1/2
United States / Canada 5'1/2 6 - 6'1/2 7 7'1/2 - 8 8'1/2 - 9