Most (all?) of the LR atomizers (and apparently MadVapes) are just a little larger in diameter. They happen to be just about exactly the same size as a 901 atomizer barrel. If you can get 901 cartridges they will fit perfectly. Usually people sell empty ones for $2 or $3 for 5. They come with the fiber filler but are dry. You fill them with your own juice. If Madvapes doesn't have them AltSmokes does. Little bit of cloth tape would work too (duct tape fixes everything

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[Edit] Just looked. They got em. First thing you see under Cartridges.
[Edit again] oops, I just clicked on the huge ad in the middle of the threads and just now noticed it was for myvaporstore and not madvapes... Madvapes carries the 901 empty cartridges but they're out of them.