Durable, portable and easy to useIncludes an accordion air hose with 3 interconnecting nozzles to fit small, medium and large diameter inflation valvesUniversal valve fittings allow this inflation pump to inflate air mattresses, pool rafts, beach balls, inflatable boatsInflates your inflatable with manual action similar to a bicycle pumpInflates on both the down stroke and the up stroke for no wasted effort and faster inflation