Review on 🚲 Crankbrothers Gem Hand Pump - Dual Piston Pump for Presta and Schrader Valves, Short/Long Design, High Volume and High Pressure for Cycling Enthusiasts by Dustin Gabrielle

nice. worked fine on my presta valve. Nice that it has two settings for pumping at lower pressure for more air volume. Update, 1 year later (900+ miles MTB): was great. It always seems like pumping is needed when someone needs air on a trip. It has two pump levels, which speeds up refueling. I thought I'd have to replace it recently because it was starting to have problems. Then I realized that he can easily understand. With all that dust from racing, the O-ring lube stopped working and the two-stage adjustment stopped working. I was able to disassemble, clean and oil it with ease. Like new. Very well done.