3. Wire Rope Pulling Hoist is a kind of small type handoperated hoister, it's compact in structure, small in size, light in weight, has a longer operating life, less power expenditure and considerably less rope wear. It is operated in accordance with lever principle by the means of pulling the forward handle or the backward handle manually to make it move to finish three performances such as lifting, pulling and tensioning with less manual force to obtain the load of more tonnage. It's widely used in construction sites, laying of large pipes, installation and adjustments of machines, loading and unloading heavy and bulky goods, tensioning cables, heaping of forest products, obstacles removing etc.