Bump - but for a thread that may be unique for not needing one.
Aspire didn't do us any favors by making the
coils look so similar. For those confused about the two different
coils, just take a look at the top of them. The original BVC coils were smooth without threads. The later Nautilus coils had a threaded top with a knurled edge to make them easier to screw on or off. If you've got an atty like the Kabuki that needs those threads to screw the
tank on, you're going to need that style.
As for using them in a Billet Box, I never liked kanger stuff so I've never used that bridge. But be aware either of the two styles can be used although you'll need the correct bridge. Adding to Our Kween's description, there's also a bridge for the Nautilus coils and it works very well.