This "Heavy Duty" reinforced version of the basic conduit features an outer protective EPDM rubber wrapping with an additional layer of glued aramid fibers. This combination contributes to further strengthen the conduit and can help it better stand the rough bending and pulling stress typical of the robotic welding cells. The fiber mesh shields the inner bodies from the arc UV rays while the yellow stripe pattern makes it more visible in the dark environment of some welding cells. The bodies under the EPDM and aramid fibres wrapping can still freely rotate on their axis.