What is this?

[mainevaper]

Comes as a free gift with my vamo... no clue what it is. Drip tip extender?

 

[tmcase]

It looks like a drip tip extender. Check out this one. GG UFS 510 Extension It sure doesn't extend very much.

 

[Kent C]

I think tm is right. There's an outside possibility that it is a 'catch cup' or a 'catch cup adapter' that may allow the Kanger T3 to fit the Vamo. The normal catch cup doesn't allow the knurled part to fit in the gap - its a problem that needed a solution.... but still think it's some kind of drip tip adapter