That's 550 cord (means it has tensile strength of 550 lbs), too thin and if you try to grab it if you fall it will do some serious damage to your hands because it is thin. You can get the HSS safety rope that is not as long as the lifeline for like $25. Do not use that para-cord as a safety line! Plus that cord stretches when weight is applied to it. Sent from my XT1080 using Tapatalk 2