I received mine a few days ago and haven't really been able to test it out yet. Unfortunately the threading is only on the ego sleeved part and not on the 510/atty connection. I use an SVR as my primary pv (which has the the ego style connection but only threads on the 510 connector).
In other words... You NEED to use this on an ego or else you have to buy an ego adapter.
The NEW GotVapes PHOENiX™ 1.25ml Bottom Coil eGo Tank 2.4-2.6ohm