CARTMAN AC-120V Heavy Duty Car Air Compressor, Red Color Powerful direct drive motor is extremely quite and virtually vibration free 120 volt direct drive inflator with Whisper Soft technology provides extremely quiet and efficient operation Inflates P185/R14 from 0 - 28 PSI in approximately 3 minutes Compact design. Over-heat protection system. When it auto-stop, rest 10 mins to let it cool down!!