Thanks for such a in depth answer. I know I'm just being a nervous, but I like to be safe and in these communities sometimes that can come of as a total noob which I'm not in the least, but I'm not an expert either in this part of vaping although I've been vaping since 2012. To answer your question in your close.
Which ones do you have, though?
I just realized I quoted them wrong. They are not UD Pre-Made coils, they are the Wotofo Pre-Made coils that come in the plastic small type of test tubes with red caps. They are Comp wire, and range from 0.25 ohms for a single Quad Twisted Clapton up to .6 ohms per coil for Tigers, Clapton Twist,Twisted. And the NC has the suggested resistance for atomizers 0.25 to 0.5 ohms. So with those coils and the NC they should all work in my two RDA's fine that I plan on using them for. I bought them all from eCiggity during their Spring Sale when they had I think it was 30% off. They were $1.59 at that time so they were $1.11 each tube of 5 so I grabbed them up. I hadn't yet been building coils and bought them to use until I learned to build. I've been building some them since then, but I'm not any master coil builder by far and probably couldn't make a decent clapton on my own from scratch.
I've got all the wiring to build them, and even during that sale bought a UD wire box that has 6 types of coil wire is why I thought those pre-made coils were UD brand. I've built with the Kanthal, Ni200, and the SS316L for several of my RDTA, and RDA's but I've only used them on either the RX200, Eleaf TC100, or the Evic VTC Mini 75 watt mods. I have a nice selection all from 28 gauge down to 24 gauge of SS316L to the same for Ni200 in those Gauges and have also found that the thinner wire 28 guage works well for a mellow vape that doesn't take much watts and still give great flavor. I rarely ever go past 50 watts on my RX200. I like a cool vape, the hot vape is not enjoyable. Many do like that hot vape though. I feel it just use your batteries up to quick.
Here's there specs on all those Wotfo Pre-made Coils I bought:
It looks like they should all work in singles, but they may be to low in dual coils. I think they come down to around .10 with dual on those Wotofo coils.
Coil Specifications:
Twisted Wire: 26AWG, ~2.2mm Inner Diamater, 0.5Ω - 0.6Ω
Quad Twisted Wire: 26AWG, ~2.2mm Inner Diamater, 0.25Ω - 0.35Ω
Tiger Wire: 26AWG and 0.8mm x 0.2mm Flat Wire, ~2.2mm Inner Diamater, 0.5Ω - 0.6Ω
Clapton Wire: 24AWG and 30AWG, ~2.2mm Inner Diamater, 0.55Ω
Hive Wire: 26AWG, ~2.2mm Inner Diamater, 0.2Ω - 0.3Ω
Clapton Twist Wire: 2x 28AWG Twisted and 30AWG, ~2.5mm Inner Diameter, 0.4Ω ± 0.05Ω