A must for any sport where an inflatable ball is used. Streamlined and small, it goes wherever you go! Check the air pressure of your sports balls to make sure your gear is up to regulation standard. This ball air pressure gauge features an air release valve to easily adjust pressure of inflated balls. This air pump with hose reduces strain on the ball valve - no more broken needles! Tandem Sport has been manufacturing and distributing quality volleyball, sports medicine, equipment and training devices to the sporting goods market since 1989.