ried and true MTL Fused Claptons in two varieties, NICHROME 80 & KANTHAL, both wrapped on a 2.5mm bit.
Nichrome 80: 2-32g/40g - 0.75ohm
Kanthal: 2-32g/40g - 1.10ohm
Coils come two (2) to a container
Recommended wattage: 12w - 17w
Dry fire at the lowest wattage possible (<12w) to avoid melting or fusing the wires together