Hope you have this staple in your bag when you get a staple in your tire! Reasons I carry an inflator 1) I commute so I don't want one more thing to have to take off my bike when I park it on the street. 2) My bike frame is already so small, I'd have to plunk down to get an effective pump.
I get controlled inflation with this beautifully machined inflator head. Just push back the sleeve when you are ready for a little or a lot of co2. Handy when making sure the tire bead is seating properly and the tube is not being pinched. Works with presta or Schrader. I enjoy good quality tools this lightweight and elegant design is a pleasure to use.