Crankbrothers Gem Hand Pump

The compact, lightweight dual-stage hand pump, featuring patented high-volume/high-pressure switch technology.

• Gem pumps feature a hybrid alloy/composite construction for low weight and high strength
• Gem pumps also feature a convertible head for Presta or 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 foreasierpumping up to 100 psi
• All Gem pumps include a bottle cage bracket mount for convenient on-bike storage