Men’s ring:
A (Diameter: 11.95 mm)
A 1/2 (Diameter: 12.18 mm)
B (Diameter: 12.37 mm)
B 1/2 (Diameter: 12.6 mm)
C (Diameter: 12.78 mm)
C 1/2 (Diameter: 13 mm)
D (Diameter: 13.21 mm)
D 1/2 (Diameter: 13.41 mm)
E (Diameter: 13.61 mm)
E 1/2 (Diameter: 13.83 mm)
F (Diameter: 14.05 mm)
F 1/2 (Diameter: 14.15 mm)
G (Diameter: 14.36 mm)
G 1/2 (Diameter: 14.56 mm)
H (Diameter: 14.65 mm)
H 1/2 (Diameter: 14.86 mm)
I (Diameter: 15.04 mm)
I 1/2 (Diameter: 15.27 mm)
J (Diameter: 15.4 mm)
J 1/2 (Diameter: 15.7 mm)
K (Diameter: 15.8 mm)
K 1/2 (Diameter: 16 mm)
L (Diameter: 16.1 mm)
L 1/2 (Diameter: 16.41 mm)
M (Diameter: 16.51 mm)
M 1/2 (Diameter: 16.71 mm)
N (Diameter: 16.92 mm)
N 1/2 (Diameter: 17.13 mm)
O (Diameter: 17.35 mm)
O 1/2 (Diameter: 17.45 mm)
P (Diameter: 17.75 mm)
P 1/2 (Diameter: 17.97 mm)
Q (Diameter: 18.19 mm)
Q 1/2 (Diameter: 18.35 mm)
R (Diameter: 18.61 mm)
R 1/2 (Diameter: 18.8 mm)
S (Diameter: 19.1 mm)
S 1/2 (Diameter: 19.31 mm)
T (Diameter: 19.51 mm)
T 1/2 (Diameter: 19.84 mm)
U (Diameter: 20.02 mm)
U 1/2 (Diameter: 20.2 mm)
V (Diameter: 20.32 mm)
V 1/2 (Diameter: 20.68 mm)
W (Diameter: 20.76 mm)
W 1/2 (Diameter: 20.94 mm)
X (Diameter: 21.18 mm)
X 1/2 (Diameter: 21.3 mm)
Y (Diameter: 21.49 mm)
Y 1/2 (Diameter: 21.69 mm)
Z (Diameter: 21.89 mm)
Z 1/2 (Diameter: 22.1 mm)
Women’s ring:
A (Diameter: 11.95 mm)
A 1/2 (Diameter: 12.18 mm)
B (Diameter: 12.37 mm)
B 1/2 (Diameter: 12.6 mm)
C (Diameter: 12.78 mm)
C 1/2 (Diameter: 13 mm)
D (Diameter: 13.21 mm)
D 1/2 (Diameter: 13.41 mm)
E (Diameter: 13.61 mm)
E 1/2 (Diameter: 13.83 mm)
F (Diameter: 14.05 mm)
F 1/2 (Diameter: 14.15 mm)
G (Diameter: 14.36 mm)
G 1/2 (Diameter: 14.56 mm)
H (Diameter: 14.65 mm)
H 1/2 (Diameter: 14.86 mm)
I (Diameter: 15.04 mm)
I 1/2 (Diameter: 15.27 mm)
J (Diameter: 15.4 mm)
J 1/2 (Diameter: 15.7 mm)
K (Diameter: 15.8 mm)
K 1/2 (Diameter: 16 mm)
L (Diameter: 16.1 mm)
L 1/2 (Diameter: 16.41 mm)
M (Diameter: 16.51 mm)
M 1/2 (Diameter: 16.71 mm)
N (Diameter: 16.92 mm)
N 1/2 (Diameter: 17.13 mm)
O (Diameter: 17.35 mm)
O 1/2 (Diameter: 17.45 mm)
P (Diameter: 17.75 mm)
P 1/2 (Diameter: 17.97 mm)
Q (Diameter: 18.19 mm)
Q 1/2 (Diameter: 18.35 mm)
R (Diameter: 18.61 mm)
R 1/2 (Diameter: 18.8 mm)
S (Diameter: 19.1 mm)
S 1/2 (Diameter: 19.31 mm)
T (Diameter: 19.51 mm)
T 1/2 (Diameter: 19.84 mm)
U (Diameter: 20.02 mm)
U 1/2 (Diameter: 20.2 mm)
V (Diameter: 20.32 mm)
V 1/2 (Diameter: 20.68 mm)
W (Diameter: 20.76 mm)
W 1/2 (Diameter: 20.94 mm)
X (Diameter: 21.18 mm)
X 1/2 (Diameter: 21.3 mm)
Y (Diameter: 21.49 mm)
Y 1/2 (Diameter: 21.69 mm)
Z (Diameter: 21.89 mm)
Z 1/2 (Diameter: 22.1 mm)
