Here are a selection of static access lines recommended for Single Rope Technique (SRT). Climbing using the Single Rope Technique (SRT) requires a different type of rope than a traditional Double Rope System because of the different demands placed on the rope. SRT rope typically has a lower diameter and low stretch properties. Arbor Response is our budget all-rounder, designed for a double rope system but is great value with a CE certification. Yale Kernmaster is a favourite of many; soft with great knotability. New England Ropes’ KMIII is leading the way with excellent durability.