Stranded bare copper conductors (14~20awg) Extruded sr-pvc, pp, pe insulation Paired constructions color-coded-one white, one black All pairs and triples twistd to minimize magnetic noise Each insulated conductor (multi-pairs and multitriples) printed with pair Number at one inch (25.4mm) interval for easy identification When shielded, aluminum-mylar tape and tinned copper drain wire Provided for maximum electro static moise and cross talk rejection Rated temperature Multi-pair constructions included no.22 awg communication wire color Coded orange.