The Lezyne Pressure Drive is a compact HP hand pump made from custom CNC machined aluminum for precise & lightweight construction. The HP pump design easily inflates tires to riding pressure with fewer strokes. The overlapping handle & barrel are integrated into a compact design. It comes equipped with Lezynes ABS Flex Hose which has a threaded Presta connection with ABS on one side & a threaded Shrader connection on the other.SMALL: 170mm 89g MEDIUM: 216mm 102g MAX: 120psi 8.3 bar