The HV2.0 is a dedicated high volume pump. It can inflate a MTB tyre to pressure in no time at all & comes with a retractable hose & screw on head to fit both Presta & Schrader valves. Valve Type = Screw-on T-Head Presta/ Schrader Maximum Pressure = 80PSI / 5 bar Light construction Handy outer sleeve Locking handle Air volume/stroke = 51cc Description by James Caine, Rutland Cycling e Commerce Team.