I have a haze rda and also a ipv2.1 its the updated ipv2 has floating 510, battery ribbon, better screws and other upgrades. I use my haze on my ipv2 with 24 gauge kanthal, 7wraps 3 mm inner diameter. Or 8 wraps 2.5 mm. I also have a troll rda I use on my sigelei 150 with 22 gauge 7 wrap 3 mm or...