Goes both ways! Whether you ride on road, off-road, or somewhere in between, the pump switches between high volume and high pressure easily to suit your pumping needs.
 
The Grid 2Stage pump provides the benefits of both high-pressure and high volume inflation in one device. Simply flip the switch between High Pressure and High Volume for easy inflating for narrow and fat tires alike.
 
High Volume High volums/High Pressure Switch Aluminum Construction for a Lifetime of Use
120 PSI Max
Fits Presta, Schrader and Dunlop Valves