I won a Leo Dripper Pro on the ByLeo contest
thread. It's a beautiful rebuildable atomizer from the 2013 timeframe. It's 14mm, widens to 18 at the base ( apparently that matches Provaris, though it would fit fine on other
mods).
It's a tootle puffer setup, the kind where you run 1.5 - 2.5 ohm
coils. Pretty basic to build for, else eBay has 5 packs of preassembled coil/wick/head for about $15.
If anyone is interested in it, let me know. Pure pif, it cost me nothing.