CO2 cartridges are super easy to carry with you on the bike, and your tire is pumped up before you know it! But you have to know what you are doing before the air is out of your cartridge and your tire is still flat. The AirPush makes the job a bit easier by allowing a very controlled way of releasing the air out of the cartridge. Easy to operate, small to carry with you, and so on! The AirPush is the ideal CO2 inflator to safe you and your flat tire!