Size
Spur knob length
Spur knob length
14
1.4 cm
0.55"
15
1.5 cm
0.59"
20
2 cm
0.8"
25
2.5 cm
1"
30
3 cm
1.2"
35
3.5 cm
1.4"
40
4 cm
1.6"
45
4.5 cm
1.8"