Are you using clapton wire by UD? Im pretty sure that stuff in kanthal, 32 claptoned over 26.
There is a huge array of possibilities. Core wire and clapton wire can be anything you want. And then you have the option of ss, kanthal, or nichrome. I enjoy either 24 or 26g kanthal for the core and 36g nichrome for the clapton, fused claptons that is. Im also playing around with 26g ss for the core wire.