Cat 6 copper cable uses eight solid bare copper wires, twisted into four pairs (e.g., blue/white-blue) inside a protective jacket, often with a central spline to reduce crosstalk, supporting high-speed Gigabit Ethernet up to 250 MHz for reliable data transfer in networks, servers, and streaming. Key features include 23 AWG conductors, compatibility with PCs/routers, and performance exceeding older Cat 5e standards, with options for solid or stranded cores for different uses.