The pump itself is quite small, therefore that means there will be little air coming out of that pump. I have used it a few times and it takes a lot of pumping to get the tire inflated, also; it is quite easy to not get a good position/grip on the pump handle and if you are not careful, it will pinch you hard! Another thing that I noticed is that you have to be very careful when inserting the valve into the pump, you must have good control/hold on the pump and valve stem or you will be losing air. Overall is a good pump to get you out of a tight spot but not for everyday tire inflation.
Bicycle equipment basic and works well. Serves its purpose.
It functions easily and does what it is supposed to do. You have to put the work in to make it work, but if you are riding a bike i would hope you can take a few minutes to pump your tires, solid and able to harness easily as well.