How to use: First, place the Condux 08082060 short rubber duct slug into the duct. It's great for checking if the duct is intact. When pulling cables, you can use it to spread the lubricant, especially in those tight - curved areas. Just make sure it's properly positioned. Attention: Don't exceed its load capacity of 4,500 lbs. Avoid using it in environments that might damage the rubber. Maintenance: After use, clean it with a mild detergent and water. Store it in a cool, dry place away from direct sunlight to keep the rubber in good condition.