2-Stage High Volume High-Pressure Digital Pump with Car\/Battery Adapter KitThe fastest way to inflate HPI items to full pressure. Two separate ports for inflation and deflation. LED digital gauge display & auto-stop function when set to desired PSI. Equipped with 12V DC accessory outlet cable & car battery adapter kit. The nozzle is compatible with HR valves only. Maximum pressure of 20 PSI.Features:The fastest way to inflate HPI items to full pressureAutomatic inflate and deflate functionalityLED digital gauge and auto-stop functionEquipped with 12V accessory outlet cable and car battery adapter kitCompatible with HR valves only20 PSI max pressure