The Double Quick I air pump is a high-output manual inflation pump that is durable, portable and easy to use This inflation pump includes an accordian air hose with 3 interconnecting nozzles to fit small, medium and large diameter inflation valves The universal valve fittings allow this inflation pump to inflate air mattresses, pool rafts, beach balls, inflatable boats and more! This inflation pump's air flow inflates your inflatable with manual action similar to a bicycle pump This manual air pump inflates on both the down stroke and the up stroke for no watsed effort and faster inflation Save your breath! This inflation pump eliminates the huffing and puffing and gets the job done much faster than blowing up an inflatable by mouth