Diameter Us Uk European
14 mm
3
f1/2
44
14.6 mm
3.75
h
46
15.3 mm
4.5
h1/2 - i1/2
48
16 mm
5
j-k
50
16.5 mm
6
l-i1/2
52
17.2 mm
7
m1/2 - q1/2
54
17.8 mm
7.5
o - p
56
18.5 mm
8.5
p1/2 - q1/2
58
19 mm
9
r1/2 - s
60
19.8 mm
10
t1/2
62
20.4 mm
10.5
v
64
Circunference Us Uk European
44 mm
3
f1/2
44
46 mm
3.75
h
46
48 mm
4.5
h1/2 - i1/2
48
50 mm
5
j-k
50
52 mm
6
l-i1/2
52
54 mm
7
m1/2 - q1/2
54
56 mm
7.5
o - p
56
58 mm
8.5
p1/2 - q1/2
58
60 mm
9
r1/2 - s
60
62 mm
10
t1/2
62
64 mm
10.5
v
64 mm