The LINDY CAT6 RJ45 U/UTP patch leads are manufactured and tested to conform with ISO 11801 specification. U/UTP - (U) unshielded cable shielding / (UTP) Unshielded Twisted Pair Standards: ISO/IEC 11801, EN50173, EIA/EIA 568B.2 Wiring spec: Straight through Ethernet standard: 10GBase-T Bandwidth: 250Mhz Shielding: No LS0H (Low Smoke Zero Halogen): No Colours available: Grey, Yellow, Blue, Red, Green, Orange, Purple, Black, White Lengths available: 0.3m to 30m (100m in grey).