Sizing Guide

Inside Circumference Sizes
MM Inches Australian  US 
40.15 1.58 C 1 1/2
40.84 1.61 C 1/2 1 3/4
41.5 1.63 D 2
42.13 1.66 D 1/2 2 1/4
42.76 1.68 E 2 1/2
43.45 1.71 E 1/2 2 3/4
44.14 1.74 F 3
44.45 1.75 F 1/2 3 1/8
44.77 1.76 F 3/4 3 1/4
45.11 1.77 G 3 3/8
45.4 1.79 G 1/4 3 1/2
45.74 1.8 G 1/2 3 5/8
46.02 1.81 H 3 3/4
46.68 1.84 H 1/2 4
47.25 1.86 I 4 1/4
47.97 1.89 I 1/2 4 1/2
48.38 1.9 J 4 5/8
48.79 1.92 J 1/4 4 3/4
49.32 1.94 J 1/2 5
49.64 1.95 K 5 1/8
49.95 1.97 K 1/4 5 1/4
50.27 1.98 K 1/2 5 3/8
50.58 1.99 L 5 1/2
51.21 2.02 L 1/4 5 3/4
51.55 2.03 L 1/2 5 7/8
51.87 2.04 M 6
52.5 2.07 M 1/2 6 1/4
53.16 2.09 N 6 1/2
53.82 2.12 N 1/2 6 3/4
54.51 2.15 O 7
54.82 2.16 O 1/2 7 1/4
55.76 2.2 P 7 1/2
56.45 2.22 P 1/2 7 3/4
57.15 2.25 Q 8
57.65 2.27 Q 1/2 8 1/4
58.21 2.29 Q 3/4 8 1/2
58.47 2.3 R 8 5/8
58.72 2.31 R 1/4 8 3/4
59.06 2.32 R 1/2 8 7/8
59.34 2.35 R 3/4 9
60 2.36 S 9 1/8
60.38 2.38 S 1/4 9 1/4
60.66 2.39 S 1/2 9 3/8
60.98 2.4 S 3/4 9 1/2
61.29 2.41 T 9 5/8
61.64 2.43 T 1/4 9 3/4
62.33 2.45 T 1/2 10
62.89 2.48 U 10 1/4
63.46 2.5 U 1/2 10 1/2
63.84 2.51 V 10 5/8
64.21 2.53 V 1/4 10 3/4
64.97 2.56 V 1/2 11
65.22 2.57 W 11 1/8
65.5 2.58 W 1/4 11 1/4
65.78 2.59 W 1/2 11 3/8
66.22 2.61 W 3/4 11 1/2
66.54 2.62 X 11 5/8
66.73 2.63 X 1/4 11 3/4
66.92 2.64 X 1/2 11 7/8
67.51 2.66 Y 12
68.14 2.68 Y 1/2 12 1/4
68.77 2.71 Z 12 1/2
69.43 2.73 Z +1/2 12 3/4
70.15 2.76 Z+1 13
71 2.8 Z+1.5 13.5
71.28 2.81 Z+2 -