2 fire and safety standards; which require pure bare copper wire in communications cables.Flexboot Cat6 Ethernet Patch Cable - Snagless RJ45_ Stranded_ 550MHz_ Support Files: Spec Sheet (Apr 24; 2017) FLEXboot™ is a trademark of Monoprice Inc. Features: Unshielded Twisted Pair (UTP) Category 6 Ethernet cable 24AWG stranded; pure bare copper conductors 550MHz bandwidth Snagless cable boot protects the plug retaining clip Thinner cable boot makes it easier to depress the clip and protective cover 50µm gold plated contacts Monoprice Ethernet cables are made of 100% pure bare copper wire; as opposed to copper clad aluminum (CCA) wire; and are therefore fully compliant with UL Code 444 and National Electrical Code TIA-568-C. The FLEXboot™ Series of cables feature a thinner cable boot protecting the plug retaining clip; which makes it much easier to depress the clip and protective cover.