Use: it is widely used in the production of concrete vibrators, flexible shaft pumps, various kinds of power tools and all non-lineal transmission tools. It is designed to protect the flexible shaft inside from damage and wear in revolution.  Construction： Flexible hose is made of multi-layer materials. From outside to inside the materials consist of winding steel straps(made of cold rollled steel straps), rubber(winding straps are applied with a thin layer of strong rubber), canvas(the winding steel straps are wrapped with a layer of canvas), rubber(extruders add an even layer of sythetic rubber on the surface of canvas), braided steel wire(one layer or two steel wire are to be made out of the synthetic rubber with braiding machines), rubber(extruders add one even layer of synthetic rubber)