Kieferz, the Nautilus & the Nautilus mini take the same coils.
Just to verify about the bigger holes.
I received 2 five packs, days before Aspire came out with the brand new coils. The air holes on the ones I received recently have bigger holes and still have the ceramic in them. Aspire only made these for a short period of time.
Then they put these new ones out, earlier this month.
World of Vape is the only vendor that I know, at this point , that carries the brand new ones, but I haven't really searched around that much.
I would still like to know how we are supposed to identify them as being ALL Cotton, because the packaging looks identical to me. World of Vape does have them advertised as BRAND NEW..., but I haven't seen any other vendor do that so far. I guess, for now, we'll have to email the vendors to ask whether they are the new cotton or not until they weed all of the older ones out.
They are already being sold on FT.
I stopped using these natilus heads and coils some time ago.
I couldnt deal with the constant clogged up feeling from them. The gurgling.
I went sub ohm and to Delta II and Kangor sub mini
But my husband still used them and took over my iStick 20 as I moved up to the iStick 50 and then up to the Seigeli 100w etc.
I was not aware they had changed these but earlier today, the hubby got his tanks confused as he has about 5 set ups in front of him, all with natilus heads and occassionally will ask me to Vape for a second and tell him wich one it is.
I can never tell.
After sub ohm they are tasteless to me
But we got in a new shipment a week and a half ago and so today I tried and I remarked at how better they tasted. I asked him if he had just changed the coil and he replied that he had about a week ago. That didnt make sense to me for they seemed so clean I thoght he had JUST that moment changed them.
I remarked about it to him and said how odd, they seem so much cleaner to me today and i actually had a few Vapes on it, which I never do.
Then I saw this thread and went and checked and one of the other guys who had questioned our order I just discovered, finally got his a few days ago and he pulled it apart and confirmed it was all cotton, 100%
Ive bought dozens of coils for these Nautilus at FT and always know which ones to get and Ive never had fakes from them. I check each package as we tend to order 5 packs at a time.
I have however, had 2 of 3 packages I bought from a well konwn Vape store here in Toronto sell me fakes. I dont think it was intentional but naivete as to where they were buying but suffice to say, I was very impressed with them this morning.
Now i understand why, I am absconding with my iStick 20 again because now I can taste it its perfect for driving.......glad I had that answered for I really noticed a difference and just coudlnt understand why.
The FT site started shipping cotton ones right after the Chinese NY. SKU # 1859402
If you read both the reviews and then the messages there you will see that they are these cotton ones.
Not sure you can tell if the hole is larger though as I dont have the older ones to compare to any longer.
That's great. I really hope that the e-ciggs continue to satisfy your cravings and that you're able to stick with it. They worked for me overnight. Here's to a heathier (...or much less harmful) future 
