Wondering what wire is used in the rba dual coil head that reads .25 on the pre installed coil? I kinda wanna say 26 but I'm not sure, I wanna replicate the build but just not sure of the gauge?
Do you mean the rebuildable head (model no. tf-r2)? That's the only .25 ohm coil head for the smok tfv4 I could find. There's a .25 ohm coil head for the tfv4 mini though (model no. stc2).
Measure the inner diameter of the coil and the number of wraps. With that you should be able to figure out the coil material and gauge by trial and error on steam-engine.org.
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