2 PAIR AUDIO, COMMUNICATION AND INSTRUMENTATION CABLE - 20 AWG STRANDED (7X28) CONDUCTORS - TINNED COPPER - CONDUCTORS CABLED - 100% BELDFOIL SHIELD ON RED & BLACK PAIR - GREEN & WHITE PAIR IS UNSHIELDED - PVC INSULATION - CHROME PVC JACKET - (PAIRS CABLED ON COMMON AXIS TO REDUCE DIAMETER) - INSULATION THICKNESS: .015" - JACKET THICKNESS: .028" - NOMINAL OUTSIDE DIAMETER: .226" - 350V 80 DEGREES C - PASSES VW-1 FLAME TEST - NEC: CMG - CEC: CMG FT4 - LENGTH: 500' - WEIGHT: 18 LBS.