Birzman Maha Apogee MTB Floor Pump Silver, 120 Max PSI MTB models have larger diameter barrels to better seat tubeless systems as well as inflate high-volume tires Barrel is angled 5 degrees towards the user for a more ergonomic and stable pumping stoke CNC machined and stiff pump barrel for smooth action and long lasting performance Swap between Presta and Schrader simply by sliding the Snap-It apogee collar back and forth Includes Gauge:: Yes