Description: Hand Ascender For safe and smooth ascent Suitable for ropes of diameter of 8-12mm The Maximum Load: 4KN, This product has got the CE certification Hardware for outdoor rock climbing, tree surgery, arborist, mountaineering, rappelling, caving, downhill, aerial working, construction, abseiling, roofing, etc. Specification: Material: Hot Forging Aviation Aluminum Dimension: Approx. 7.32 x 3.39 inch/18.6 x 8.6 cm Maximum Load: 4KN