Foot Ascender Riser - Rope Climbing Equipment For Srt Climbing Tree Arborist [CE Certification] - Meet EN 567 standards.The foot ascender you can trust. Max load:330lb / 150 kg, Rope compatibility:8-13mm, Webbing Width: Approx. 2 cm/ 0.79",Weight: 4.06oz / 115g [Material] - Ito Rocky Rope Grab is made of Mg-Al alloy, high strength, strong bearing capacity. The surface is anodized and very wear-resistant and corrosion-resistant. [Efficiency in Rope Climbing] - Allows you to ascend more efficiently and easily, and provides an additional point of support for your feet when used with other climbing gear. [Suitable for All Conditions] - The steel sharp teeth can grip the rope firmly to keep climbers saftly.Self-Cleaning Cam That Enables The Functioning even On Dirty or lcy Ropes. [Wide range of uses] - Suitable for rock climbing, mountaineering, tree climbing, exploring, rappelling, rescue, engineering protection, aerial work etc.