Bontrager dual charger pump

Steel construction and replaceable internals for extended life; Self-selecting head easily adjusts to Presta and Schrader valves; Wide, stable base minimizes sway; 4 "" gauge built into easy-to-read base; The button built into the base allows you to conveniently switch from the high volume mode to the high pressure setting; The high volume setting allows you to inflate the tire quickly; The high pressure setting allows you to easily inflate the tire as PSI increases; Pressure maximum 160 psi (11 bar);