Feature●STAY REGULATION READY: Check the air pressure of your sports balls to make sure your gear is up to regulation standard●PRESSURE RELIEF VALVE: This ball air pressure gauge features an air release valve to easily adjust pressure of inflated balls●UNIVERSAL: The dial reads both KG and PSI●QUALITY SPORTS GEAR SINCE 1989: Tandem Sport has been manufacturing and distributing quality volleyball, sports medicine, equipment and training devices to the sporting goods market since 1989Description 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. The dial reads both KG and PSI. Tandem Sport has been manufacturing and distributing quality volleyball, sports medicine, equipment and training devices to the sporting goods market since 1989.