application: hsh-c(k) series double lever block is a kind of highly efficient and versatile hand operated hoisting appliance, which is capable of being widely applied in shipbuilding, power plants, transport, construction-sites, mines, post and telecommunication for installing machines, lifting goods and dragging loads etc, it is particularly used in the narrow places, the open air and over head places for pulling and stretching work at any angle. features: the main parts of hsh-c(k) double series lever block are made of superior steel, which has the following characteristics in design and service: 1. safe, reliable and durable in use. 2. excellent performance and minimum maintenance. 2. small volume, light weight and portable in size. 4. light hand pull and high efficiency. 5. advanced structure and attractive appearance.