The HS is a easily- operated manual hoisting equipment for using and carrying., suitable for use in factories,,mines,farms,construction sites, wharves, docks and warehouses for in stallation of equipment, as well as for loading and unloading goods ,it is specially advantageous for lifting without power supply. The chain block can be attached to a trolley of any type as a traveling chain block .It is suitable to monorail overhead conveying system , hand travelling crane and jib crane. We supply the HS block with symmetry arrayed two-stage gear driven structure, design reasonable, dainty material, beautiful appearance, small volume, high toughness, safety and durability. Product Feature 1. capacity :0.5 t - 20 t 2.standard lifting height :2.5 m -3 m 3.testing load :0.75 t -25 t 4.Min.distance between hooks: 270 -1000mm 5.NO.of load chain fall lines :1 - 8 6.diameter of load chain :6 -10 mm