I cannot get the hand-lathed acrylic drip tips like Pawn and Ming to fit in cartomizers or even in one TW 510 atomizer I have. They actual acrylic fits but their o-rings are too big. I bought a few anyway because they are pretty and bought a bottom feeder and a different atomizer to hopefully have something to put one on haha.
But I mostly use 510 and 808 cartomizers w/ a drip tip as a mouthpiece and unfortunately those won't fit. So I use the plastic and delrin drip tips at LiteCigUSA.net where they have lots of choices (note - the new swirly ones are an extremely tight fit in cartos - hardly fit, and I don't know if the flat tips fit. I use the clear colored plastic and rounded black delrin).
Then there are 306 drip tips which go over a 306 atomizer. My 306 atomizer is Joye
buy unfortunately many 306 drip tip sare made to only fit the Cisco 306's straightly atomizer body. So my 306 drip tip only goes part way down my Joye 306 atty (looks like crap but I only drip at home)
And BTW for new vapers - drip tip + atomizer is not recommended auto
batteries. Use on sealed manual
batteries.