The Topeak 2Stage Gravel Mini Pump features an innovative 2Stage pressure selector that lets you choose a high volume or high pressure to quickly fill your gravel bike tyre effortlessly.Compact size easily fits into a jersey pocket.Topeak 2Stage Gravel Mini Pump FeaturesHEAD: Presta valve with thumb lock & integrated dust capBARREL: AluminumCAPACITY: 90 psi / 6 bar Stage 1 - 0 - 60 psi Stage 2 - 60 - 90 psiVOLUME PER STROKE: Stage 1 - High Volume (71 cc) Stage 2 - High Pressure (24.8 cc)HANDLE: AluminumADDED FEATURE: Side mount bracket (Art No. TDP-2C)SIZE: 18.4 x 3.6 x 2.8 cm / 7.2” x 1.4” x 1.1”WEIGHT: 101 g / 3.56 oz More info