... ..50mm bare copper conductor, 2.HDPE insualtion, twisted pairs. 3.Standard:UL444,TIA/EIA 569B 4.RoHS complied cat3 cable Type & SpecificationStandard ... : IEC61156TypePairsConductorJacket UTP CAT310P,20P,25P,30P,50P,100P,200P0.5mm bare copper or tinned copperPVC,CM,CMR ...