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Crank Brothers Gem Hand Pump


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This Crank Brothers' Gem-S pump is constructed using a hybrid alloy/composite construction for low weight and high strength.

It features a convertible head for Presta and Schrader valves, and a patented high volume/high pressure air switch: use the high-volume mode under 40 psi for quick inflation, then rotate the switch to the high-pressure mode for easier pumping up to 100 psi.

The Gem-S includes a bottle cage bracket mount for convenient on-bike storage.