Preformed Line Products DE-2520 Dual Coaxial Dead-End. Cable type (mm) DUAL RG6/U .275" X .546" (6.9 x 13.8). Coaxial Dead-ends. Custom Coaxial and Dual Coaxial Dead-ends are performance-proven dead-end designs for RG-59/U, Dual RG-59/U, Dual RG-6/U, and RG-11/U coaxial cable. In addition to the inherent benefits of the basic Telegrip, these premium products feature twin leg construction which cushion and relieve gripping stresses created by unusually high winds and heavy ice loading. They are especially recommended for foam insulated coaxial cable and areas where there are extreme corrosive and demanding environmental conditions.