The Topeak Mini Master Blaster Bike Pump w/ Gauge is a compact pump that doesn't skimp on performance. Dual pumping action fills tires faster and has the ability to inflate tires up to 120 psi. A Thumb-lock lever ensures an airtight seal while a padded grip keeps your hand comfortable while pumping. In addition, this pump can quickly convert between Presta and Schrader valves.