Heavy duty 60 strand (22AWG/1.5mm) is featured on all their extension leads, be it standard (straight) wire or twisted.
Gold plated connector pins, for maximum conductivity.
If that's not enough, all of the Radient leads feature the safety lead lock 'clip' that ensures they don't come apart, and negates the need for purchasing separately.
To cater for all radio/servo manufacturers, both Futaba and JR/Spektrum variants are readily available.
Available in lengths (straight and twisted):
Pins: Gold plated