Genuine Innovations Second Wind Road Alloy CO2 Inflator/Pump
Small and light weight, this combo CO2/hand pump bicycle tire inflator will always keep your tires up and running. Fully controllable CO2 bicycle tire inflation along with high pressure hand pump built right in makes this the only pump/inflator you'll need to carry. Works with threaded CO2 cartridges only. To inflate with CO2, screw CO2 cartridge into pump head, attach to valve stem (presta only) and twist cartridge to inflate tire. For manual inflation, attach pump head to valve stem and begin pumping. It's that easy!
I own a Lezyne CO2+Hand Pump combo as well. I like the idea of options when it comes time to repair a flat. Rather than always have to use a hand pump (on rainy days especially) it's nice to have the option to use the CO2, but when I can take my time and save a little cash, using the handpump makes sense. I have a floor pump at home, with a gauge, so I have no need for an overly complicated pump to go with me for a ride. These are strictly "Get me homes" in my mind. In that sense, this is a great pump. It mounts cleanly to the frame and is not bulky or eye-catching that i need to worry about it being in the way, or being enticing to would-be thieves. For the money it's hard to beat this pump.