HSH Manual Lever Block has earned itself a great appreciation because of its distinct merits as small cubage, light weight, beautiful appearance, small manual force, safety and liability, and long operational life-span. It is especially used in occasions without power source such as shipbuilding, post office, mines, electric power, and transportation units in heavy goods suspending, equipmeng fixing, mechanism traction, and aerial exercise. It can rapidly unhitch brake equipment under unloaded condition, so that the flying hook can remove fleetly. We also can choose and add structure without light load limit according to the needs of clients.