Nice! I'm currently using a vgod elite mech and rda. I think the coils are fused staple claptons or something?..
I'm not 100% sure though I cant coil build to save my life lol, I leave that to my close friend! These were them brand new, they hit pretty crazy!
not sure on coils, i'll be soon buying a new one but i'll ask at my favorite store. I'm also not a "techie" :D