Tom Pendley wanted to see how strong a rescue frost knot was so we tested it as a whole and each loop of it. We used these four cords. 5.9mm - $2.15 per ft - https://hownot2.com/products/5-9mm-powercord Both loops 35kn and 37kn. Single loop 22kn and 15.79kn 6.0mm - $1.29 per ft - https://hownot2.com/products/arete-armadillo-cord Both loops 33kn and 35kn. 8.0mm - $0.62 per ft - https://hownot2.com/products/arete-cougar-cord Both loops 31kn 9.0mm - $1.01 per ft - https://hownot2.com/products/safetypro-static-rope Both loops 33kn All of these were super good enough Tom Pendley wrote Technical Rescue Field Operations Guide and we stock it at https://hownot2.com/rescue-book 👉 Learn and SHOP at https://www.hownot2.com/ 👉 Best EMAILS on Earth: https://www.hownot2.com/signup 👉 10% off ROCKY TALKIE by clicking https://www.hownot2.com/rocky