The Bontrager Dual Charger Floor Pump allows you to easily inflate your tires whether you ride a road bike or a mountain bike. The Bontrager Dual Charger floor pump is constructed from steel and features replaceable internals for long-term durability. With two settings, high pressure and high volume, the Bontrager Dual Charger floor pump provides the right setting for any style of bike. Plus, the auto-select head on this floor pump instantly fits both Presta and Schrader valves. For easy filling before you hit the pavement or trails, use the Bontrager Dual Charger Floor Pump.