If you are after flavour, the Oumier Wasp is fantastic and cheap as chips and 22mm. Most of the time I use the Drop RDA 24mm. I found this to work best for me with a single coil configuration. Probably because I like to vape it at about 35W. It is the bees knees! It doesn't need any kind of adapter for single coil config
Both come with the BF pin
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Both come with the BF pin
Sent from my SM-N950F using Tapatalk