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 Mario Schultz

Great pump and love the HV/HP switch on the bottom. My only complaint, as others have mentioned, is that there is no cap to protect the valve head from dirt and water. My simple solution was to place the rolled up black tape against itself to not have to deal with the sticky residue, cut to the size of the hole and screw the cap back on. I just have to remember to remove it when it comes time to use it. I hope this helps my fellow cyclists.