Bestway Air Hammer Sport High Pressure Manual Air Pump

Rapidly inflates or deflates with the up and down stroke.
Rapidly inflates or deflates with the up and down stroke
Simply switches from inflation to deflation
Single/double change pump (as much as 7 PSI in double-action mode, as much as 23 PSI in single-action mode) and 5 valve adaptors to suit almost each inflation valve
Appropriate for many high-pressure inflatable vessels with working strain between 5-23 PSI
Simple-to-read show with built-in strain sensor