Conductor: Pure Copper, [19/0. 08+/-0.008MM] + [21/0. 18+/-0.008MM]. Aluminium Mylar Foil Shield: 10um. Fastener Included: Yes, Velcro. Braid Conductor Size: 16 5 0.10mm +/- 0.008mm. The thicker and purer the centre core, the less resistance there is.
eBay