Description of Petzl Dragonfly 8.2mm Half Rope 8.2mm half rope with Duratec Dry treatment Besides being one of the lightest half ropes on the market, Petzl’s DRAGONFLY is also durable, with over a third of its fiber content in the sheath. Perfect for ice and alpine climbing, mountaineering and wandering rock routes. Features: Diameter: 8.2 mm Length: 60 m Type: half rope Weight: 41.8 g/m UIAA falls: 6 Impact force: 5.07 kN Elongation: - dynamic: 34 %; - static: 8 % % sheath by weight: 36.6 %