-Aluminum alloy and PP pump body ABS valve long life-High-pressure pump inflates up to 29 psi-Very fast inflation pump up your inflatable paddle board in a few minutes-Double action to inflate your board each time you pull up and push down when the white switching valve is in a flat position-Single action to inflate your board each time you push down when the switching valve is in a concave position-IN/OUT Double Function ensures that the air pressure indicator is at a safe value of around 12 ps