Works well. Bought 2 of them to screw together to mske extra cool. It worked and is so low profiled, that you can get away with double stacking these for Atomizers like mine, the Sequoia by HVT.
i can see why they are now $25.00 , because they break too easily , went to remove the ceramic tip on my second one and apparently left over product glued it to the mating surface of the straw and ripped it out when i unscrewed it. not happy.
not vape pen sales fault.
I just love the 3-1 yocan evolve plus XL DUO purple now I have extra coils for the yocan evolve plus XL DUO and I can't find the battery I need to use them I'm at the point where I just need a battery that works on it so I can use them.