AI rods are specifically designed for Insemination, they have a rounded tip to
facilitate a traumatic insertion and are thin walled and flexible making them
suitable to use on large and small breeds. Being flexible (or semi rigid) these
follow the natural tract of the bitch, which is curved. Another feature is the
rods become more flexible at 38°C – so by rubbing them with a paper towel before
use you can increase the flexibility of the rod.