2-Stage High Volume High-Pressure Digital Pump with Car/Battery Adapter Kit The 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 pressure * Automatic inflate and deflate functionality * LED digital gauge and auto-stop function * Equipped with 12V accessory outlet cable and car battery adapter kit * Compatible with HR valves only * 20 PSI max pressure