Oxygen Free Copper Subwoofer Cable Gold Plated RCA ends Dual Braid shield for superior noise rejection Krystal Cable RCA Subwoofer Cable - Features a coaxial design utilizing a double braid OFC shield and a 24 gauge stranded Oxygen Free Copper center conductor. A Low Density Polyethylene (LDPE) dielectric surrounds the center conductor for very low dissipation factor and lower capacitance. This RCA subwoofer cable is constructed similar to Canare 77 Coaxial cable used by other manufactures, but at a fraction of the cost. Outer Diameter of the KRY1.12M is 6mm.