Mini Bike Pump with CO2 Inflator - Dual Mode Hand Pump/ CO2 Valve - Portable Bike Tire Pump Patented Auto-Switching Twin Head Fit Presta/Schrader, No CO2 Cartridges Included (Style：A)

I was skeptical of this pump because of some reviews that said it had fallen apart. So I made sure to try it out on my bike despite not having a flat. My tires were a bit low, so it was a good time to try it. I did attach a CO2 cannister to make sure that would work. Screwing in the pump around the valve took some effort, but it was secure and fit perfectly. The hand pump worked great, inflating my tires completely with just a few pumps. I would be careful not to twist it, as the torque could conceivably damage it. But for a pump that does both manual and CO2 administering, this thing appears wonderful to me.

So I usually don’t write reviews because I just didn’t have much to say, but for this product, I will take the time. To begin, I need to use some context: About five months after I bought this pump, the handle stopped locking in place, and I thought the item was defective. I called Amazon and they said their return window had passed. They suggested that I could contact the manufacturer, so I looked up their number in Taiwan, and I requested the phone tree menu in English. Since I speak Chinese, I spoke to the operator in Chinese, but I am pretty sure I could speak to them in English. They transferred me to the right person immediately, and when I explained my problem, they asked me to submit a picture/video through Facebook messenger to their Facebook page. The person even gave me the best search keywords to find their page. When I uploaded the picture/video, I realized that the person that I was speaking to was also the person monitoring the messenger. They responded immediately and asked whether I could unscrew the handle, and when I did this, I thought maybe the handle had just come loose, so when I tightened it, it locked again. Problem solved, and the company provided great service, so don’t hesitate calling them. I wish the handle didn’t unscrew so easily, as it only happened while the pump was mounted on my bike, but the company is five star service more than made up for that. And it’s nice to know that certain aspects of this pump are repairable and replaceable, and that is very important to me as a DIYer.

Love the idea of this pump and the mount is very nice and efficient. When mounted it looks nice and is very minimal. The fact that this can use C02 and regular air is wonderful. The issue I had is that either valve style you must truly thread the pump on to the valve to get the air to flow correctly. Meaning I had to turn the unit clockwise 4 -5 times completely to thread and hold airtight. You can't do this when a tire/tube is mounted to a wheel. The spokes won't allow it rendering this unit useless. I thought maybe the blue/red heads would spin or thread on themselves but they do not move. Most pumps just push on and then lock with a lever which this definitely doesn't do. It's a shame because I think otherwise this would be a great product.

Just received today. While this pump is lightweight and easy to use, the finish does scratch easily as can seem in photo after cutting plastic ties to remove pump from packaging. Given that will be using on rugged trails, pump finish is going to get scratched a lot. Also, from the packaging, pretty clear that there was suppose to be 2 CO2 cartridges included that are obviously missing and appeared to have been removed. Checked the product description and found no mention of CO2 would not be included. The video also indicates that several cartridges are suppose to be included. Very disappointing.

First of all the build quality is amazing. Made from machined aluminum I have no worries about it falling apart or cracking like some of my plastic frame pumps. It's nice and lightweight as well as powerful for it's size. Being able to pump manually as well as using CO2 was the selling point for me.I can stick this little guy in my backpack with all of my other emergency bike repair tools and it barely takes up and space. For it's small size manually pumping doesn't take nearly as long as you would think.I almost exploded a basketball trying to see how much I could manually pump it up. It got really high in psi to where a lump or egg was starting to form. This thing can pump out some pressure!With the CO2 hooked up it can very nearly pump my huge mountain bike tire up with one 16 gram cartridge. It then takes just a few pumps to fill it the rest of the way up.I've had quite a few frame pumps in my day and they never last because they're always made of some cheap Chinese plastic. This however is straight up aluminum.... AND I got it on crazy sale which just makes it that much sweeter. Super happy and highly impressed

Pros: Solid feel, good inflation rate, small, works with Presta and Schroeder valves, threads onto the Presta Valve stems, incorporates a C02 tankCons: Takes some getting used to not moving while pumping, you cannot buy a separate mount for the pump, some C02 tanks will rub/grind against the downtubeOverall, I'm very happy with this pump. I'd gladly recommend it for anyone who wants to mount their pump and C02 cartridges to their frame. The pump threads on nicely to the Presta valves stems, has pretty substantial volume, and was easy to use. My only real gripe is that you cannot order/purchase separate mounts for use on multiple bikes. I'd easily pay for separate mounts for the three bikes I use.

I just used this item to get me out of a bind. Caught a flat in a rural area with no one within an hour's drive to help. First I tried to pump up my spare tube, couldn't get it air up, turns out the pump was working but the tube was bad. Patched my original tube and started to air up in a few pumps and the tire was seated. Then I used a CO2 and it was fully aired in the blink of an eye. Super simple, compact and out of my way (I rode about 500 miles with the pump before today when it was needed). Buying another for my wife's bike now!

While the design of this pump is intriguing, they don't offer an intelligent way to carry it; they expect you to SCREW it into you frame, including the screws to do so. Ummm......I don't think so. What kind of idiot came up with that idea; I will not be putting any holes into my carbon frame. How hard would it have been to include a velcro or silicon attachment..... things that make me go 'hmmmm'

Bomba y posibilidad de inflado con co2 con la misma herramienta. Muy util

La bomba no infla con presion suficiente para usar bien la bicicleta