SEX PROBE SPECULUM. The principle is to insert the probe into the cloacae and apprisal according to the length of the probe have been inserted into. For the males the length of the probe inserted into will be 9-15 pieces of abdominal flake. On the other hand it will be only 3 pieces of abdominal flakes for females. the accuracy of this method got recommended in this field. METHOD TO USE IT: choose a suitable size of porbe. hold the snake insert the probe in the cloacae slowly and softly, stop when the probe cant move anymore, then record the quantity of flakes. the round design in the front wont hurt the snake.