☆material 5N oxygen-free copper, 4-core, each core 14 copper wire, a total of 56 copper wire spiral woven together, and then silver. （Only Cable, headphones are not included）. For example, the car's anti-shock system universal joint guard (CVJ), commonly used Hytrel material, the car parts to withstand an average of 150,000 miles of heavy blows and large changes in the temperature range.
eBay