keystone jack(rj45 cat5e keystone jack, cat6 keystone jack)· Housing : high temperature thermoplastic · Covered with metal that provides well anti-EMI performance · Contract : phosphor bronze , phosphor bronze with 6 to 50 u " gold plate . · Available in Cat 5e,T568 A ,T568 B wiring .meeting every cabling requirement · Accept 22-26 AWG solid with a insulation diameter of 0.4-0.6 mm · Easy to be terminated Low attenuation loss and high return loss . · High reliability and superior performance .