The most popular way to ascend using Single Rope Technique (SRT) is using a Rope-Wrench-Set-Up that works in conjunction with a standard friction hitch. The set up requires a pulley, a method of attachment to the body, a hitch cord, the ISC Rope Wrench ZK2 and a carabiner. This section includes all the elements you need to create your own bespoke set-up. See our section on Complete SRT Set Ups to purchase a complete Rope Wrench Set Up.