I carry this one http://www.amazon.com/Genuine-Innova...ords=inflators

It will use threaded, unthreaded, and if you drop a #10 washer in the bottom it will use 12 gram air rifle cartridge .
I find sometimes the co2 inflate to fast and the tire can pop off the rim I tend to pump the tire to ~20# seat tire in the rim and use co2 to get to good tire pressure usually with a 12 gram co2 (cheeper and more avialable )
Roy