Our premium polyester combo rope is made with high-tenacity polyester cover yarns over high strength polyolefin core yarns. This high-strength combo rope is an economical choice and is good for tree work and other demanding utility work.Our polyester combo ropes are low stretch and have high breaking strengths. The polyester cover makes this rope soft and easy handling, but maintains superior abrasion resistance as well as UV and petroleum resistance for the longest service life.Important Safety Tip: We recommend a 5:1 safety factor. To find the working load limit of a particular diameter, divide the tensile strength by 5. See images for tensile strength and working load limits (WLL). Do NOT exceed the working load limit.