Ordered 2 packs for installing Volcano on my CR-10. Good quality wires. Heater cartridge seems to be 18AWG silicone wire. Comes with several connectors and shrink tubes. Very consistent and qualitative kit. Both cartridges have heat protectors on wires + thermistor spring is very nice designed solution. Thermistor cartridge seems to be more reliable than glass bead one, at least it seems so.
Not tested yet but looks good quality.