Conductor: tinned stranded copper wire · Structure of conductor: 7x0,20mm · Core diameter: approx. 1,2mm · Core insulation: Semi-Rigid-PVC · Color sequence: international color code · Twisting: cores in layers · Jacket: Special PVC, black sim. RAL 9005 flame retardant acc. to UL-VW-1 Our control-cables acc. to UL will be delivered with an approved jacket imprint.