It has a twisted pair of 20awg PE (PolyEthylene) insulated stranded (7×28 stranding) conductors, with one conductor bare copper and one conductor tinned copper, then wrapped in a 0.236″ round clear PE inner jacketing w/ integral fill over the twisted pair, then covered in a Duofoil shield (100% coverage aluminum foil/polyester tape/aluminum foil for 2 layers of foil shielding), then wrapped in an 85% coverage tinned copper braid shield, all in a black PVC (PolyVinyl Chloride) outer jacket.