I got this product because I ride in a not so ideal terrain and I get tire flats most often than others and this 6-pack Procorsa CO2 cartridge helps me deal with flats. Because it is a threaded type, it is so easy to deploy and I am on my merry way sooner than later. I recommend this to all that commute daily.
These are one of the best deals you can find on C02 cartridges. Especially when they are on sale. They work well, have good even threading and pump up a standard 25c road tire to over 100psi in seconds. Don't get caught out on the side of the road without them. I always have two in my pockets, along with two spare tubes.