Feature 1.It is a new type of high-efficiency, safe and durable lifting machinery with three functions of lifting, pulling and tensioning. 2.The structure of the whole machine is reasonable in design,with safety self-locking device, high in safety factor and long in service life. 3.The main rated lifting capacity is 8KN, 16KN, 32KN and 54KN. Standard lifting height is 20 m. Applicatoin It is suitable for long distance lifting or pulling in the field without power source.