Just for everyones info...they do have lil n20 cartridges.....heres the link...
whip chargers ...
also they a lil bit smaller than the co2 cartridges which contain 12grams....these have 9 grams....
Guess you are all wondering how i know so much about this kit....yes i fell for this bs...well i purchased it when it was first coming out...they showed a totally different picture than what the new pics show...it actually looked half way technical..this just looks cheap...when i got it....that was what i got...as for the feel of it...i heated one of the lil cartridges up in my heater vent one time(

) and it actually gives you a pretty good hit...that is for like 2 seconds...if it lasted longer i might consider it(although if it did, you could wind up with some kind of problem)...but i wouldnt pay for the kit..if you wanted to try it...get a fridge water line..some fittings..and the "quickpump" device and some of those lil cartridges...so from expierence...dont buy this....lol