Inflatable Shaft 1,Mateiral and technology from TaiWan 2,Manufacturing with 7 years' experience 3,Two kinds of types. Chinese Factory Directly Supply Inflatable Shaft:Working Principle: The inflatable shaft is easy to use, only need to bring their own gas source, the air pressure control 6-8kg/cm2 range and need to lock the external components (such as the circular paper tube), air guns facing ...