Compact and super-efficient, the Grip Drive HV is a high-volume bicycle hand pump featuring a knurled barrel for superior grip while pumping. Its overlapping handle design is constructed from machined aluminum, providing superior durability, minimal weight, and all of the style. The integrated ABS Flex Hose is both {Presta and Schrader valve compatible and greatly improves pumping action and ergonomics. This mini pump is completely rebuildable and created with the best materials available. With up to 90 PSI (6.2 BAR) of pumping power, the Grip Drive HV is excellent for all high-volume bicycle tire applications.