... in the outer diameter coating. Duct rodder will be equipped with different size reel according to the length of rod. There ... or become brittle in the cold weather. 4. Cover was coated with long-term UV-resistant polyethylene. 5. There are meter marks ... ,250,300,350,400,450,500 meters for choice. Material Fiberglass (inner) and high density polytgtkebe(outer) Density 1.9gr/cm3 ...