I use this wire between a 24volt power supply and a 1000watt charger. Very flexible and the outer sheath holds up very well to heat from soldering.

Extremely flexible, multi-strand copper. Single strands twisted together into slightly larger bundles, then each bundle twisted into final cable. Durable insulation, shiny and possibly slippery, but holds well with cable ties.

these wire is very flexible and is easy to work with the high strand count makes your thumb & fingers a little sore after twisting for 25 plus connectors but that was to be expected