cartomizer. hope this helps.
Worries me a bit too. I don't like the idea of aluminum leeching into my e-liquid.
*don't mean to rain on your parade, OP*
Probably can find them elsewhere, I found these froma websearch engine just keywords "punched Boge cartomizer"
Opus (x2), Provari, Billet Box, 134, Gepetto (Bad@ss and Taz), VTR, MVP2, Buzz Pro, BAM, Saber Touch 5v, Vamo,
ssLT, The Curve, Saber Touch Max, VaporWoods (Dutch+ and Wisp), Jazz Cartopipe's, ManCaveMod VW, MVP, SVD