This Micro Mite II Mini Pump is perfect for the rider that wants to fix a flat on the go and get right back on the road or trail. This pump automatically adjusts to both shrader and presta valves. No need for adapters. It is 9" long and will easily fit in a bike bag or even your back pocket. The pump also comes with a mounting bracket for your bike frame so you never leave without it. Don't forget to grab a patch kit and tire levers and you'll be ready to go.