I bought this pump at Target. I decided to test it before hitting the road. I deflated a 700x23 road tire completely, then proceeded to pump it up with this pump. The issue I had was it seemed to take a while to pump up and the pull-out stroke (the 2nd half of the dual action) felt awkward and not very useful. I felt like I was struggling with it more than it added to putting air volume in the tire. Used correctly, this pump does work. I was able to get my tire up to about 80 PSI before I deemed the pump "good enough" to get me back on the road should I flat. However, I am returning this pump to Target as I was able to find an equally priced but better working pump from Performance Bike (the Performance Hurricane Micro Mini Pump).