The Specialized Air Tool Flex Pump uses an inverted camber design that allows for quick fill-up on mountain tyres, yet it can still reach the high-pressures needed for road tyres. Great value if you have both MTB and road bike tyres plus the flexible hose means less chance of causing valve damage/flexing as you pump.
Twin Schrader and Presta thread on T-head.
Inverted barrel design allows for efficient high volume and high-pressure pumping.
Lightweight and compact hose with built-in flex to prevent excess stress on valve stems.