This is the only pump we sell and the only pump we use daily at the Bicycle Tailor. A lot of pumps have the option to work with Presta or Schrader valves, some requiring heads to be unscrewed or flipped, while others use a smart head that'll do both. The Lezyne is in the latter camp and the ASB2 head is really very good, and so easy to use on either type. You literally push the head over the valve, slide the anodised cover forward, give it a quick twist to the right and, voila! you're sorted and secure.