Item summary: Single wire speaker cable, with 1.5mm square Copper conductors, 6N Copper, PTFE insulation, Cotton filler and PVC outers. This cable features 99.9999% (6N) purity OFC copper conductors which are covered in PTFE (Teflon) insulation, which is then damped by cotton strands and bound with a paper wrap and finally encased with a PVC outer.