The lever blocks of the brands Shuanghang, adopted modern design, have adjusting nether sling dogs position, which have novel sculpts, unique styles, speciously looking, well capabilities, higher work efficiency, are the famous salable products and credible helper. 
     Is a kind of small, multi-purpose manual lifting, traction machine, widely used in electric power, mining, shipbuilding, construction, transportation, post and telecommunications departments of equipment installation, items, lifting, parts and parts bound, line pulling taut and welding contrapuntal etc, especially in the workplace, narrow field work and various angles force more show its superiority.