This is a Problem Solvers AirBob Universal Tire Inflator Pump Head.
Thursday, May 30 2019 (about a year ago)
Problem Solvers Air-Bob Pump Universal Tire Inflator Replacement Head
An excellent replacement head for the original on my years-old Hurricane Team HP pump. The Problem Solvers Air-Bob replacement head is almost identical to the original head, heavy duty, well constructed and easy to attach to both Presta and Schrader valves. The head makes and maintains a good seal on valve stems, even under high pressure (I've tried it as high as 130 PSI). The only thing it's missing is a button valve to allow controlled release of air from the tire when the head is still attached (making it possible to lower the pressure in the tire to a desired value). I hardly ever use that feature, so it doesn't create any hardship for me. I recommend this replacement head without reservation on any bike pump.