Probing baby BPs

[BHReptiles]

I have a few hatchlings that are ready to go. They are about 120 grams and I want to sex them but don't know how to pop. I have probed larger snakes but never anything this size. I have one of the RBI probe kits and was just wondering from those who do probe hatchlings, which size probe would be best to use for the size snake I am describing? I don't want to injure and the smallest size is so small it just seems rather pointed even though there is a ball on the end. Thanks

I don't use a ball tip for my babies. Those looked too big for me. I bought an additional 2 or 3 probe kit that is not ball tipped and I use the smallest one. You just have to be very careful when you probe.