The Bravo SUP-4D double-action pump has been specially developed for inflatable SUP boards. Dual-action at low pressure inflates when you push down and pull up for faster inflation, single-action at high pressure inflates only when you push down for easier pumping. The deflate option allows you to fully deflate your board, reducing the pack size of the board or boat.High-pressure pump inflates up to 29 psiDual-to-single action switchIn-line pressure gaugeHigh-pressure valve fitting ensures a tight fit without air loss