Inch
mm
A
1/8"
6
17.5
1/4"
8
20.0
3/8"
10
23.5
1/2"
15
26.5
3/4"
20
31.0
1"
25
36.5
1.1/4"
32
43.5
1.1/2"
40
47.5
2"
50
55.5
2.1/2"
65
67.0
3"
80
75.5
4"
100
94.0
5"
125
114.0
6"
150
128.5