- 100% CNC-machined aluminum construction - Oversized piston and shaft integrated into a compact overall design - Reversible Presta/Schrader hose stows inside handle when not in use - Equipped with ABS (air bleed system) chuck to allow release of back pressure and eliminate the chance of unthreading Presta valve cores - Inflates to riding pressure quickly with 30% fewer strokes than conventional pumps - 120psi/8.3bar max