Circum-
ference (mm)

Alphabetical
(Australia / NZ, UK & EU)

Numerical
(USA, Canada, Asia)

Made In Earth
44.2 F 3 44.0
44.8 F ½ 45.0
45.5 G 3 ½ 45.5
46.1 46.0
46.8 H 4 47.0
47.4 47.5
48.0 I 4 ½ 48.0
48.7 J 48.5
49.3 5 49.5
50.0 K 50.0
50.6 5 ½ 51.0
51.2 L 51.5
51.9 6 52.0
52.5 M 52.5
53.1 6 ½ 53.5
53.8 N 54.0
54.4 7 54.5
55.1 O 55.5
55.7 7 ½ 56.0
56.3 P 56.5
57.0 8 57.0
57.2 / /
57.6 Q 58.0
58.3 8 ½ 58.5
58.9 R 59.0
59.5 9 60.0
60.2 S 60.5
60.8 9 ½ 61.0
61.4 T 61.5
62.1 10 62.5
62.7 U 63.0
63.4 10 ½ 63.5
64.0 V 64.5
64.6 11 65.0
65.3 W 65.5
65.9 11 ½ 66.0
66.6 X 67.0
67.2 12 67.5
67.8 Y 68.0
68.5 Z 12 ½ 69.0
69.1 69.5
69.7 / 13 70.0
70.4 Z+1 71.0
71 / 13 ½ 72.0