Bicycle pumps will pump large volumes per stroke or they’ll pump to a high pressure. This is the former.’Large volume’ is relative for a mini-pump, but with a long stroke and chunky aluminium barrel it does inflate tubes pretty quickly without you pumping like a piston engine. It’s rated to 90psi; but that’s with Charles Atlas at the handle.
In real-world conditions, I got a 700x23c tyre to 58psi with 50 easy strokes but gave up after 70 strokes (72psi). With a huge 26x2in slick, it took 100 strokes to get to 23psi and I gave up at 250 strokes (61psi). These kinds of pressures are more than enough for mountain bikes and are okay for city bike tyres and fatter touring tyres.
For your road bike, it’s strictly a get-you-home measure. In use, the fold-out handle is comfortable and the pumphead locks onto the valve. It’ll do Presta or Schrader valves, but you have to unscrew the pump head to swap between them. It comes with a clip for frame-mounting, but is small enough for CamelBaks, deep jersey pockets or panniers. Build quality is good and there’s a ‘no quibble’ lifetime warranty.