... tank, piston type,oil free, none air polluted, start with air, continuous working,powerful.auto start AS186 AC 220V Mini ... Air Compressor Features:1. Single Cylinder Piston Compressor With Air Tank.2. Multifunctional, ... when the pressure over 6bar in the air tank.Air tank: 3.0LFitting: manometer; pressure regulator; air ... , CETL, ROHS CE AS186 AC 220V Mini Air Compressor with air tank