Using your Condux 08073730 replacement rod is easy. First, take the rod out of the 24 - foot cage. Connect the male end fittings and tapered heads to the rod as needed. Then, carefully insert the rod into the smaller ducts for shorter runs. When handling the rod, be gentle to avoid any unnecessary bending or damage. After use, clean the rod with a dry cloth to keep it in good condition. Store it back in the cage to prevent tangling. If you notice any signs of wear on the end fittings or the rod itself, it's a good idea to replace them to ensure continued performance.