Oh yes, I bought one of those. Although mine doesn't say Efest on it. I thought it was too nice for batteries and was going to find another use for it. Sadly years later, I still have it with nothing in it. Maybe I should use it for batteries after all.
Quite a few have done that on the Steam Crave FB group. They post a picture of the build with a rant about junk hardware, 510 pins too short and so on...
I put a 7 mil Lost Vape Bottle in it, bit tight but fits 
How are those LV 7ml bottles? The silicone looks thick like the ones on the Furyan.Not Bad for $29
I'l run it like this for a few days, just to make sure it don't leak or any other issues?
Then I'l swap the 250c in
The Therion BF has bottles like this too. But they are not fill holes in this case, but a breather hole so when you top fill through the 510 you don't have to do all of that tilting thing. I think I used it once just to see how well it works. But I don't mind it is on the collar or not. I just make sure it is closed and it only takes a second. I never had a leak if it was closed.The bottles nice! Only thing is they have this stupid fill hole in the collar
Thanks, might have to try a few out. Looking for a replacement bottle for the OG Drone PET bottle but have found nothing yet I like and that 11ml capacity is hard to give up.The bottles nice! Only thing is they have this stupid fill hole in the collar
The collar swivels around & a fill hole lines up, I don't like it cause it could leak
I stuffed a piece of oring rubber in the small hole. It's an easy fix, but the fill hole is Stupid & should have never been there at all!
I tried the 10 mil bottle from the Squeezer, it fits too, just a bit to wide & not tall enough, the bottle bubbles out the squonk hole a bit
The LV bottle fits the best out of all the bigger capacity bottles I have
