mfr: CERRO WIRE NON-METALLIC SHEATHED CABLE W/GROUND WIRE Solid copper conductor with thermoplastic insulation. Paper wrap. Tension member paper dam. Impregnated fiberglass braid. For use primarily in residential wiring including branch circuits for outlets, switches, etc. LENGTH 250' CUBIC IN 20 SIZE 12/3 Package Shipping Size 0.01 x 0.06 x 0.06 (not product dimensions)