Cotter pin size

[Dom]

I'm away from my bike but want to get some new cotter pins for when I'm back, can anyone tell me the sizes I need for the front and rear axle?

 

[toglhot]

You confused me for a moment then, we call them split pins. Cotter pins, like the second one pictured, we used on bicycles when I was a kid in the 50s and early 60s.
I use R clips for the axles, they are reusable and easy to remove and replace. I use 3mm for the back, 2/2.5mm for the front.

 

[Dom]

Thanks @toglhot !

 

[bosco659]

Iirc I use 1/8” for axles.