I picked this up after a recommendation from my local bike shop. I am using it for my mountain bike as I wanted something very small and light. It takes about 200 pumps to get a completely flat 26″ x 2.1 tube to 45 pounds. It locks on to presta valves very easily and stays connected while pumping. It’s not the best pump if you are in a hurry, but perfect for an emergency along the trail. The plastic bracket bolts underneath the drink cage. The pump clips in and has a thick rubber band like retainer. Hardly know it’s there.
Topeak Pocket Rocket Master