Insulclamp Cable Clamps (Replaces porcelain clamps) Assembly includes: 1 Insulclamp & 1 pr. zinc plated Pipe Straps with Everdur (Silicon Bronze) Hardware The thermoplastic elastomer Insulclamp has a dielectric strength of 640 volts/mil The flame retardant one piece design allows for trouble free assembly Everdur hardware is non-ferrous and prevents magnetic induction