VeloChampion Alloy Mini Bike Pump Suitable for Presta, Schrader and Dunlop - Portable, Compact, Durable and Easy to Use

I buy this from my brother. He needs it. I tried it first in my roommate bike and it’s worked great. I recommend it.

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Light, rugged pump. Mounts very securely next to your water bottle, using the same 2 screws and therefore taking up no room. The clever Velcro strap ensures that it cannot depart your bike accidentally.Another reviewer stated that the pump slides open while mounted on the bike. This is user error. The little hole in the bottom half of the pump (visible in the main picture) lines up perfectly with a pin in the holder, making it impossible for it to slide open once mounted correctly. The directions do not mention this, but just a tiny bit of mechanical aptitude makes it obvious how it is intended to work.This also works very well on Schrader or Presta valves. As shipped, it fits the common Schrader valve. But if you unscrew the light gray piece at the valve end, you'll see two little black plastic pieces inside. BE CAREFUL NOT TO LOSE THEM, especially on the trail. By flipping both pieces around and screwing the light gray bit back in place, you will find that it is a perfect Presta valve pump. The directions do mention this, but they consist of a very small single piece of paper, and are easy to discard without noticing.I wouldn't try to inflate a tire completely with this pump, as it would take a long time. What it is intended for is to partially inflate the inner tube, allowing proper twist free alignment underneath the tire, before using another method (my choice is CO2) to completely inflate the tube to spec.I suppose you could (in a pinch, no pun intended) use just this pump to inflate the tire to 35 PSI or so from flat, but I'm just too lazy and impatient to even attempt that unless I have no choice.

great pump,but doesn't give much air so youll have to pump longer. definitely worth the money,but use mostly as a back up pump if you are lazy. or use it as a fan when youre hot hehe but in all seriousness it is a great pump,small as hell. you could fit this anywhere including your pocket,but if youre one of those skin jeans wearers then you wont be able to get it back out unless you pull your pants off or cut a hole in it. youre thinking "if its that small it cant pump much air.". maybe 6 minutes tops from flat. but most dont let their tires get flat before they pump it. the strap as far as ive experimented with it is ABSOLUTELY useless. doesnt fit around my bike frame,maybe around the handle bar tho. even so it probably would fall out. so just get some duct tape like we do to fix everything,and use it to fix the straps.

Honestly its worth the extra $20 to walk down to REI or a local bike shop and get a real pump that goes higher than like 25 PSI and has a hose. I used this for about 4 months and it worked in time of emergency, and I could never get any decent pressure out of it in my times of need. Id recommend the Lezyne Road pump, it's elegant and pumps up to 150 PSI I believe, and the hose makes a WORLD of difference

Excellent little pump! So light and small that you would think it can't do much, but it CAN. I have it attached to my road bike and it has saved me twice when I've been out many, many miles away from home. After fixing my flat, I pulled this little thing out and It easily pumped my tires back up to where they were pretty hard (probably around 90psi). Using it IS tricky because of its size--not much to hold on to to get strong pumping action. To solve that, I placed my wheel on its side on the ground, folded the old flat tube into a block and placed it between the head of the pump and the ground--problem solved; I could pump as hard as I wanted because the force was being applied against the ground. Used the presta side--I have not used the schrader side.

The pump is lightweight and easy to use. However, when pumping up my tires on a hybrid bike, the part that connects to the tire stem doesn't seem to hold under high pressure. The connector on from the pump to the stem screws into the pump and under what seems to be moderate pressure (50 psi according to my guage) the screw in connector gets pushed through the threads and air starts leaking out of the tire. I can't seem to get my tires above about 50-55 psi despite the claim that the product can pump up to 100 psi. It'd be good to keep on you when riding in case you need to get enough pressure to get from point A to point B but the one I received isn't serviceable as a permanent tool to maintain tire pressure.

This is by no means a great pump for regular use. It is an emergency pump. It's bailed me out twice so far. It's small enough to fit in my handle bar bag, and light enough to not be noticeable. Due to the small canister size I would only get the tire pressure up to about 3/4, which was workable until I found a gas station or got to regular pump. Even this would take 150 to 200 pumps.If you want one pump that you can use as your regular tire pump, this is not it. If you want a lightweight one for emergencies, and don't mind lots of pumping, this worked for me.