Brand new never used Shielded copper wire. Extremely Flexible.
Made by Prysmian Group. Part number FHLR91XC91X.

Large quantities and whole rolls available.
This wire is in the following layers starting from the inside working outwards.
11AWG or 5mm^2 copper wire very flexible.
Orange insulation
Braided steel shield
Orange insulation

Local pickup available at the Kansas City location.
Sold by the foot.