Width of probe?

What is a good width of a probe for a ball python? For example, 1/4 of cloaca, etc. I have the general idea but I'm worried that the smallest probe in my kit is too large for baby ball pythons.

Try the smallest. Just don't force it, if it won't go in with little effort don't try anymore

come on man you should know this your the morph master! lol on a serious note im not a 100% but there are tons of youtubes that might shed some light on this. check out justin kobylka's channel he has a video on probin

It implies master of genetics not sexing lol