Coil Master Comp Wire is a special Fe-Cr-Al-Si alloy (Kanthal similar), which was developed specifically for steamers.
Thereby it has a wide temperature range and lower resistance than common wires.
One of its biggest advantages is certainly its special taste purity.
Furthermore, it is more steam-intensive than other wires and also heats up very quickly.
It is available in 22AWG (0.644mm), 24AWG (0.511mm) and 26AWG (0.405mm) wire thicknesses.