Cat6 Plenum Shielded (STP) rated Ethernet cable is 23 AWG with 4 pairs (8C). Suitable for 1 Gigabit and 10-Gigabit Ethernet. Bandwidth tested up to 550 MHz. 1000 feet (305 meters) of our Cat6 Plenum Shielded Cable has been packaged on a tangle free, easy pull reel/spool 100% SOLID BARE COPPER CONDUCTORS. Pure bare copper produces a stronger signal along with better conductivity and flexibility. Our Cat6 Plenum Shielded jacket is fire safety rated for use in air plenum spaces above suspended ceilings or below raised floors. High degree of flame resistance and low toxicity smoke. CENTER SEPARATOR/SPLINE: The center separator/spline provides the cable extra support to help fight against twists and kinks. It also separates the pairs to further eliminate cross-talk.