Review on 1000ft Blue CAT6 Plenum Cable - 550MHZ, 23AWG 4Pair, Solid UTP Network Cable, Unshielded Twisted Pair. Also in White, Yellow, Gray, Purple, Green, & Black by Joe Garczynski

Attention, the buyer is not a solid copper wire. This is CCA copper coated aluminum wire. I took a sample from the end of the wire and put it under the microscope to check. At 300x magnification, we see that the inner core of this material is not the same color or material as the outer. When they say "hard wire," they do so to mislead the buyer. These wires do not meet the same standard in the current CAT6 specification. I buy two of these boxes and they are sent back immediately. Definitely misleading advertising.