compressor with air 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, low noise.3. Thermally ... CE, GS, ETL, CETL, ROHS CE AS186 AC 220V Mini Air Compressor with air tank