STRENGTH&DURABLE--SOB Hand ascender is made of high quality aluminum alloy, durable, high strength, lightweight and easy to carry. Beaking Strength:8.5KN,Tension:4KN, Breaking Strength:8.5KN.  DIMENSIONS--7.68*3.58 inch,Weighs Only 0.55lb(250g), Weight Limited:100KG/220lb, suitable for 10~13MM Rope. MULTIPLE HOLES: The upper small hole can be connected to the carabiner, and the lower large hole can be connected to other equipment accessories, such as webbing or lanyard, to let operator put to great use.  UPGRADED CAM- SOB hand ascender is made of stainless steel and nickel-plated to improve oxidation resistance, wear resistance, hardness and corrosion resistance. The bite part has also been improved, with sharp teeth that can grip the rope tightly, can handle most situation and service for long.  RGONOMIC HANDLE:The rubber handle of SOB hand ascender is ergonomically designed to increase friction and provide strong grip, not only protecting the user's hands but also improving the efficiency of climbing ropes.