Standard: INTERNATIONAL ISO/IEC 11801 USA ANSI/TIA/EIA-568B.2-1 Product Characteristics: Structure:0.57-0.585mm solikd bare copper(23AWG copper), PE insulation,4PAIRS,Alumimiam foilshidlded, FR/PVC or LSOH jacket Frequency: 250MHz Confirm to UL require Transmission velocity:600Mbps Application:100Base T,Giga-Ethenet,ATM155Mbps,and Multi-media net works,etc. Package:305Meter/box