Serfas Switch Stick Mini Bicycle Pump Capable of getting you to extremely precise inflation pressures The switch valve & simple valve designs enable switching between Presta or Schrader valves, while the dual head offers both Our simple screw-on and Quick draw head designs both screw on the valve for a secure fit, even at high inflation pressures Compact Alloy construction for storage almost anywhere Hi/Lo switch to customize inflation speed Dual Valve pump head - fits presta and schrader valves PSI Capacity 110