Specifically designed to connect the Pulling Rope with a fibre optic cable. They are composed of several jointed rods and two drawback counterweights. Technical specification: Non Rotating Counterweight Device for Stringing O.P.G.W Cables Specify Designed to connect the Pulling Rope with a Fiber Optic Cable. They are composed of several jointed rods. Coating : Epoxy primer coating thereafter Enamel Painted Safe working Load : 5 Ton Weight- 27 Kg.