Oumers Rappel Gear Downhill Equipment, Descender Rappel Rock Climbing Descending Belaying Equipment Rappel Device Outdoor Recreation, Strong Safe Durable Material: Aluminium and Magnesium Alloy Forging, Surface Anodized Oxidation. CE Certification, Rated Strength: 35KN (About3500KG ) Rope Diameter: 8~16mm (0.32~0.63inch) The Super 8 is An Anodized, Light and Full-Size Figure 8 That Works Extremely Well When Rappelling Application: Rock Climbing, Caving, Hiking, Canyoning, Outdoor Training, Engineering Works, High-Altitude Operations, Rescue, Adventure etc.