Using the Condux 08067400 Flexible Steel Mandrel is easy. First, insert it into the conduit where there's an obstruction. You can use the pulling eyes at both ends to guide it through. The graduated steel discs will help push through the blockage, especially in conduits with extreme bends. However, be cautious as there's a possibility of duct shaving. When pulling the mandrel through the conduit, do it slowly and steadily. After use, clean the mandrel with a dry cloth to remove any debris. Store it in a dry place to prevent rusting. This way, your mandrel will stay in good condition for a long time.