These larger cartridges are great for carbing and dispensing 2.5 gallon kegs. They fit on the side of the keg inside a normal fridge. So far I've carbed and dispensed two 2.5 kegs and it shows no sign of running out.

hooked to my corny which had water in it. Ran out of co2 on my 5lb tank and put this in on high carbed it up ..Good seltzer good backup.

Use them in my Mini-reg. Awesome!

These are large enough to push more than 3 corny kegs, but the price here is about double what you can find them for elsewhere, even with free shipping from Morebeer.