The 50-Foot Vertical Lifeline with Snap Hook and Thimble End is constructed with 5/8-inch, 3-strand polyester rope. It features a double-locking snap hook and steel thimble at the anchorage end, and a steel thimble at the trailing end. The polyester rope has a tensile strength of 8,500 pounds. This VLL features superior resistance to abrasion and UV light, exceptional hockle resistance and five-tuck splice for superior strength and safety. The exclusive steel thimble resists wear and extends the life of the line, while the protective PVC shrink tubing protects the spliced end. FallTech definitely goes the extra mile in the construction of Vertical Lifelines. Our ropes exceed the industry standards for tensile strength and resist the effects of the elements and the hazards of the jobsite. We always use 5-tuck splices, even though ANSI only requires 4, just to ensure that our Vertical Lifelines are a little better than the rest. All FallTech Lifelines, Rope Grabs and Roofer's Kits meet or exceed all applicable OSHA and ANSI standards.