Portable Mini CO2 Air Inflator Bicycle Pump with Dual Valve Head that Fits Presta and Schrader Valves - Small Tire Tool Pumps Tires to Desired Air Pressure for both Road and Mountain Bike

Five stars for the delivery time and for the unit's appearance. Since I bought this for emergencies, I haven't yet had a chance to actually use it in an emergency situation, but it really looks great and seems well-built and easy to use. And it comes with a CO2 cartridge. I bought some extras to make sure I had some for backup but it's small enough to carry in an under-the-seat bag with a spare tube and tire-changing tools. So I'm ready (I think) for that next flat tire when I'm far away from home.

After a bad experience with another co2 inflator this one exceeded all expectations. It was easy to use and fit right on the priests valve. The regulator worked well and all of the co2 made it in the tire.

Small, light and inexpensive. The first time I used it the co2 cartridge leaked when I was screwing it on. It may have been user error as I haven't had a problem since. I love the size and simplicity.

Good.

Very easy to use. Simple. I just make sure when I'm using it on my presta valve that it's on right. I give it a tug before filling it up.

This is the second quick tire filler I have purchased. The first was made of plastic and literally exploded the second time I used it.This one feels solid. It takes a tiny bit more effort, to use, than some, but that is OK because it is more rugged.

Puncture pin bent after only a couple of uses.

The only thing worth knowing about this product, is that the PSI of the CO2 was enough to fill the tire, but when I sat on it, the tires still needed additional pressure.After a slow ride to the gas station, I was able to fill it to the point that the tires didn't warp when i sat on it.I weigh 190 lbs. If you are much lighter than me, it shouldn't be an issue.The CO2 cartridge had just enough air for 2 hybrid tires. No more no less.