This rock climbing hand crank is suitable for a variety of scenarios, such as mountaineering, rock climbing, tree pruning work, operations and so on. This climbing gear is the ideal tool accessory for your family or friend to enjoy activities such as rock climbing or outdoor hiking. It has a compact construction and light weight design with a load capacity of 8.9kn, making it portable and easy to use. This is flexible and adjustable. You can adjust the ascending, and rope fixing according to different usage. Make of aluminium alloy to ensures durability and wear resistance for long term use. It can be fit with ropes from 9mm/0.35inch to 12mm/0.47inch in diameter.