Can anyone help with sexing my snakes?

[Jpham33]

I've read that you can sex your snakes visually by looking at their tails. They are both about 2.5 years old. I got them back in June 2014 as hatchlings/juveniles.

I plan to get them probed soon but if anybody can help me out that would be greatly appreciated.

P.s I think that they are both males when I look at their tails