The Wow Sports Double Action Hand Pump is the most convenient pump on the market. It is great to use to inflate small inflatables and airbeds or to use with a 12V pump to top off your larger inflatables so they are nice and firm. The double action hand pump provides a continuous stream of air on the up and down stroke for faster inflation. The Wow Sports Double Action Hand Pump is made from lightweight, non-corrosive plastic and comes with 4 inflation adapters for just about any valve you will come across.