OPG ATAR static kernmantle rescue rappelling rope 11mm x 50 feet Safety Orange UL ANSI NFPA USA A true 11.0mm (not 10.5 or 11.4mm) static kernmantle rope providing dependability and durability in the most demanding environments. Size is very important, because devices require very specific diameters of rope to function properly CERTIFIED to UL Life Safety Rope Specifications, NFPA 1983:2012 Edition Standards and Z359.1 ANSI Standards for Personal Fall Arrest Systems Minimum Breaking Strength: 33.3kn (7500 lbs) Elongation: 2.2% at 1.35kn (300lbs) 4.4% at 2.7kn (600 lbs) 7.4% at 4.4kn (1000lbs) The Best Size, The Best Elongation, The Best CERTIFIED Certifications of any rope in the market today.