Depending on the diameter, Petzl cords have a multitude of uses, for everything from mountaineering to home projects: reinforcing a belay, creating a self-blocking knot, working on a home project... Low stretch accessory cords Rugged construction A multitude of uses, for everything from mountaineering to home projects: - 7 mm diameter for reinforcing a belay... - 6 mm diameter for creating a Prusik-type self-locking knot - 4 mm and 5 mm diameter for home projects... Weight per meter: 24 g Tensile strength: 9 kN Certification(s): CE EN 564, UIAA Material(s): nylon