What model is this?

[kane]

In the same situation as you! Would love to know if the 510 cartos fit.

 

[roxics]

if it ends up being a 510 connection the next thing you need to try has to be 510 l/r and mega l/r 1.7 cartos

Sure, if you want to blow out the battery in a few weeks time. LR's should only be used on a higher mAh battery like an eGo/Riva or mod.

 

[Boodle]

Comparing a Smoke 51 Trio mall kit the threading looks the same as your pics. The only difference I can tell is 4 vent hole notches instead of the two on my 51Trio. 510s fit this one. Beware, a LR carto will ruin the battery quickly. Those little batts can't handle LR.