Material: oxygen free copper The diameter of the wire is 17mm, the inner double layer of internal and external insulation, the outer layer of high specification blue PCV insulation, 3 thick 4 square m more→ulti-strand oxygen-free copper cores. Structure features: The use of good sound oxygen free copper (OFC) as the main material, anti-wear, anti-interference, strong flexibility, the inner high-density pure copper screen mesh, to ensure the smooth passage of power. Suitable for power cord, insert due to the seat connection line, or used to rub machine, or used to rub socket and so on Sound characteristics: In addition to the medium frequency sweet, transparent, good texture, low frequency strength …