This has been called a real “game changer” by  the SUP manufacturers because of it’s compactness, durability but most of all because it’s super easy to achieve those high p.s.i. levels; up to 25 p.s.i.. 

This is a true two-stage pump, with a high volume (low pressure) mode that helps “shape up” your board quickly. The high volume mode  starts to “stall out” at around 6 p.s.i..  then with a simple twist of the wrist you switch to the high pressure mode that is unbelievably easy to stroke yet capable of achieving  those high pressures easily.