This is the set I'm looking at purchasing - http://www.reptilebasics.com/sexing-probes-8piece
They also have this set, for just hatchlings/juvi's - http://www.reptilebasics.com/husband...icro-ball-tip/

They have 2 other sets, but I wanted the ball-tipped ones. (The others are rounded, but these seem to be more newbie friendly )