Nachoman

A little ambiguous, because I think they sell about five or six different Co2 delivery systems. But the OP probably can't go wrong buying any one of them.

gsa103

That really seems to be true for most Lezyne stuff. Not always the cheapest, but everything I've seen of theirs has been well designed, reliable and functional.

StanSeven

There are several brands and they all work. Basically two variations exist on how they work - pull a trigger or twist the inflation head to inflate/stop.

There are two sizes of cartridges for road use - 12g and 16g. The 12 is usually enough for most road tires (23 and 25) which should get you home if you are careful and the gas doesn't leak. The 16 size is generally better but you can possible over inflate a 23 tire if you aren't careful.

Both inflators and cartridges come in threaded and non threaded versions. The 12 non threaded are easily to find and cheapest. They are the ones sold in sporting good stores and places like Wal Mart. The only drawback is they require the larger inflator with a trigger mechanism and the container to hold the cartridge.

If you are looking for miminal size and weight. The threaded cartridge with a twist operation head is the way to go.

WheresWaldo

Just note that there is one more difference between a CO2 cartridge intended for tire inflation and the really inexpensive ones that Walmart, Dick's, other sporting goods stores sell. The tire carts are just CO2, the ones for CO2 pistols have a drop or two of lubricating oil in the cartridge. They use the oil to keep things working well. You can use either, but just know that there is a difference. I have never had an issue with the drops of oil, I have had one person tell me that they had issues with a patch sticking because it was oily. I don't patch, tubes are cheap, so I have never run into this myself.

mgwilder

Red Zeppelin

Robert P

Having tried out the Shiny Object, for any future viewers of this thread here's a technique recommendation - after you seat it on the valve stem, open the valve just a *little* and kind of use a free finger to keep the stem in place until there's enough inflation to put some firmness behind the stem. I deflated the tire completely to see how far one 16g cartridge would refill it and when I first opened the valve it blew the valve stem out. I'm sure I lost several PSI worth of gas in the process. It doesn't thread on, the end of the valve stem is held in place and sealed by a rubber sleeve.

Once I got that little quirk worked out it worked like a charm.

The cartridge freezes over but I found it's better to grip the Shiny Object itself rather than the cartridge. Makes for better manipulation of the valve.

Trsnrtr

Watch the little seals in the chuck of any of them. They can get brittle over time and fail. Even the all metal ones that I've seen have them. After failure, I now check them after every use to make sure they haven't cracked.