This Jobe triple-action SUP pump is designed to inflate SUP’s to pressures of up to 20 psi fast and easy. It features two 3.5 L double action cylinders, a pressure gauge to keep control and a Halkey Roberts nozzle to fit all Jobe Inflatable boards on the market. The Jobe triple-action SUP pump has three different operating modes to keep inflation easy at any stage.FeaturesGauge to keep controlDouble or single action up to 21 psi2 cylinders with triple action for quick resultHalkey roberts nozzle: fits all jobe inflatable boardsUseDouble action on 2 cylinders quickly inflates your SUP up to 5 psi.Single action on 2 cylinders lets you inflate your SUP to 10 psi at moderate speedSingle action on 1 cylinder to inflate your sup to a maximum of 21 psi with minimal effortSpecificationCapacity: 3.5L