... dielectrical prope Model: Fiberglass Reinforced extruded Extension Rod/ Dog Bone/Duct Tube Electircal Insulation Fiber Reinforced Pultruded ... strength and excellent electrical insulating characteristics for use in a variety of electrical products, like transformers, chocks, ... infrastructure and other engineering applications. The pultruded products are Dog Bone, Corner Angle, Flat, Hat, Rod, Square, ...