can these co2 cartridges be used?

[vince805]

I got a box of these but don't know if I could use them or not.

 

[Toymaker]

You should be able to. The look like standard 12 gram co2 cartridges. Some people use them for a single homebrew keg for portability. You'd have to use one of these...
http://www.homebrewing.org/CO2-Keg-Charger_p_3343.html