Micro Connectors' Bulk CAT6A CMR Riser Shielded Cable 250 feet of high quality, solid full copper wire with overall aluminum foil shielding, ready for termination and routing. The Mylar foil shielding protects your data as it travels through the four twisted pairs of 23-gauge solid copper wires by wrapping it in a thin metal sleeve thus keeping electrical interference from things like fluorescent lights and electrical lines found in a drop ceiling or inside walls at a minimum. Simply pull the length required for your installation straight from the spool and terminate at your leisure. These cables are a great aid in large scale network installations and other long-distance cable runs and like all of our bulk networking cables, these are constructed with only high-quality components that can be counted on for high performance.