Polyolefin 6500 ft. pails of pull line have a 230 lbs. tensile strength. Used for prompting wires through pipes and conduits. Have sure grip slots for easy line access and center-dispensing lids to avoid crimps and kinks. Polyolefin pull line will not rust, rot or mildew. Blown into conduits to accurately measure and pull wires and cables. May also be used in open ceilings or walls. Packaged in a center dispensing pail. Pull Line Melting Point: 325 degrees Fahrenheit. Tensile Strength: 230 lb.